4420000

素因数分解:

$2^5\times 5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:60

約数の個数: 120

約数和(自身を含む): 12399156

約数和(自身を除く): 7979156

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 25, 26, 32, 34, 40, 50, 52, 65, 68, 80, 85, 100, 104, 125, 130, 136, 160, 170, 200, 208, 221, 250, 260, 272, 325, 340, 400, 416, 425, 442, 500, 520, 544, 625, 650, 680, 800, 850, 884, 1000, 1040, 1105, 1250, 1300, 1360, 1625, 1700, 1768, 2000, 2080, 2125, 2210, 2500, 2600, 2720, 3250, 3400, 3536, 4000, 4250, 4420, 5000, 5200, 5525, 6500, 6800, 7072, 8125, 8500, 8840, 10000, 10400, 10625, 11050, 13000, 13600, 16250, 17000, 17680, 20000, 21250, 22100, 26000, 27625, 32500, 34000, 35360, 42500, 44200, 52000, 55250, 65000, 68000, 85000, 88400, 110500, 130000, 138125, 170000, 176800, 221000, 260000, 276250, 340000, 442000, 552500, 884000, 1105000, 2210000, 4420000]

約数ペア:

[(1, 4420000), (2, 2210000), (4, 1105000), (5, 884000), (8, 552500), (10, 442000), (13, 340000), (16, 276250), (17, 260000), (20, 221000), (25, 176800), (26, 170000), (32, 138125), (34, 130000), (40, 110500), (50, 88400), (52, 85000), (65, 68000), (68, 65000), (80, 55250), (85, 52000), (100, 44200), (104, 42500), (125, 35360), (130, 34000), (136, 32500), (160, 27625), (170, 26000), (200, 22100), (208, 21250), (221, 20000), (250, 17680), (260, 17000), (272, 16250), (325, 13600), (340, 13000), (400, 11050), (416, 10625), (425, 10400), (442, 10000), (500, 8840), (520, 8500), (544, 8125), (625, 7072), (650, 6800), (680, 6500), (800, 5525), (850, 5200), (884, 5000), (1000, 4420), (1040, 4250), (1105, 4000), (1250, 3536), (1300, 3400), (1360, 3250), (1625, 2720), (1700, 2600), (1768, 2500), (2000, 2210), (2080, 2125)]