26650000

素因数分解:

$2^4\times 5^5\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:87

約数の個数: 120

約数和(自身を含む): 71198568

約数和(自身を除く): 44548568

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 41, 50, 52, 65, 80, 82, 100, 104, 125, 130, 164, 200, 205, 208, 250, 260, 325, 328, 400, 410, 500, 520, 533, 625, 650, 656, 820, 1000, 1025, 1040, 1066, 1250, 1300, 1625, 1640, 2000, 2050, 2132, 2500, 2600, 2665, 3125, 3250, 3280, 4100, 4264, 5000, 5125, 5200, 5330, 6250, 6500, 8125, 8200, 8528, 10000, 10250, 10660, 12500, 13000, 13325, 16250, 16400, 20500, 21320, 25000, 25625, 26000, 26650, 32500, 40625, 41000, 42640, 50000, 51250, 53300, 65000, 66625, 81250, 82000, 102500, 106600, 128125, 130000, 133250, 162500, 205000, 213200, 256250, 266500, 325000, 333125, 410000, 512500, 533000, 650000, 666250, 1025000, 1066000, 1332500, 1665625, 2050000, 2665000, 3331250, 5330000, 6662500, 13325000, 26650000]

約数ペア:

[(1, 26650000), (2, 13325000), (4, 6662500), (5, 5330000), (8, 3331250), (10, 2665000), (13, 2050000), (16, 1665625), (20, 1332500), (25, 1066000), (26, 1025000), (40, 666250), (41, 650000), (50, 533000), (52, 512500), (65, 410000), (80, 333125), (82, 325000), (100, 266500), (104, 256250), (125, 213200), (130, 205000), (164, 162500), (200, 133250), (205, 130000), (208, 128125), (250, 106600), (260, 102500), (325, 82000), (328, 81250), (400, 66625), (410, 65000), (500, 53300), (520, 51250), (533, 50000), (625, 42640), (650, 41000), (656, 40625), (820, 32500), (1000, 26650), (1025, 26000), (1040, 25625), (1066, 25000), (1250, 21320), (1300, 20500), (1625, 16400), (1640, 16250), (2000, 13325), (2050, 13000), (2132, 12500), (2500, 10660), (2600, 10250), (2665, 10000), (3125, 8528), (3250, 8200), (3280, 8125), (4100, 6500), (4264, 6250), (5000, 5330), (5125, 5200)]