221000000

素因数分解:

$2^6\times 5^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:72

約数の個数: 196

約数和(自身を含む): 625070124

約数和(自身を除く): 404070124

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 25, 26, 32, 34, 40, 50, 52, 64, 65, 68, 80, 85, 100, 104, 125, 130, 136, 160, 170, 200, 208, 221, 250, 260, 272, 320, 325, 340, 400, 416, 425, 442, 500, 520, 544, 625, 650, 680, 800, 832, 850, 884, 1000, 1040, 1088, 1105, 1250, 1300, 1360, 1600, 1625, 1700, 1768, 2000, 2080, 2125, 2210, 2500, 2600, 2720, 3125, 3250, 3400, 3536, 4000, 4160, 4250, 4420, 5000, 5200, 5440, 5525, 6250, 6500, 6800, 7072, 8000, 8125, 8500, 8840, 10000, 10400, 10625, 11050, 12500, 13000, 13600, 14144, 15625, 16250, 17000, 17680, 20000, 20800, 21250, 22100, 25000, 26000, 27200, 27625, 31250, 32500, 34000, 35360, 40000, 40625, 42500, 44200, 50000, 52000, 53125, 55250, 62500, 65000, 68000, 70720, 81250, 85000, 88400, 100000, 104000, 106250, 110500, 125000, 130000, 136000, 138125, 162500, 170000, 176800, 200000, 203125, 212500, 221000, 250000, 260000, 265625, 276250, 325000, 340000, 353600, 406250, 425000, 442000, 500000, 520000, 531250, 552500, 650000, 680000, 690625, 812500, 850000, 884000, 1000000, 1062500, 1105000, 1300000, 1381250, 1625000, 1700000, 1768000, 2125000, 2210000, 2600000, 2762500, 3250000, 3400000, 3453125, 4250000, 4420000, 5525000, 6500000, 6906250, 8500000, 8840000, 11050000, 13000000, 13812500, 17000000, 22100000, 27625000, 44200000, 55250000, 110500000, 221000000]

約数ペア:

[(1, 221000000), (2, 110500000), (4, 55250000), (5, 44200000), (8, 27625000), (10, 22100000), (13, 17000000), (16, 13812500), (17, 13000000), (20, 11050000), (25, 8840000), (26, 8500000), (32, 6906250), (34, 6500000), (40, 5525000), (50, 4420000), (52, 4250000), (64, 3453125), (65, 3400000), (68, 3250000), (80, 2762500), (85, 2600000), (100, 2210000), (104, 2125000), (125, 1768000), (130, 1700000), (136, 1625000), (160, 1381250), (170, 1300000), (200, 1105000), (208, 1062500), (221, 1000000), (250, 884000), (260, 850000), (272, 812500), (320, 690625), (325, 680000), (340, 650000), (400, 552500), (416, 531250), (425, 520000), (442, 500000), (500, 442000), (520, 425000), (544, 406250), (625, 353600), (650, 340000), (680, 325000), (800, 276250), (832, 265625), (850, 260000), (884, 250000), (1000, 221000), (1040, 212500), (1088, 203125), (1105, 200000), (1250, 176800), (1300, 170000), (1360, 162500), (1600, 138125), (1625, 136000), (1700, 130000), (1768, 125000), (2000, 110500), (2080, 106250), (2125, 104000), (2210, 100000), (2500, 88400), (2600, 85000), (2720, 81250), (3125, 70720), (3250, 68000), (3400, 65000), (3536, 62500), (4000, 55250), (4160, 53125), (4250, 52000), (4420, 50000), (5000, 44200), (5200, 42500), (5440, 40625), (5525, 40000), (6250, 35360), (6500, 34000), (6800, 32500), (7072, 31250), (8000, 27625), (8125, 27200), (8500, 26000), (8840, 25000), (10000, 22100), (10400, 21250), (10625, 20800), (11050, 20000), (12500, 17680), (13000, 17000), (13600, 16250), (14144, 15625)]