256400010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{2081}}^1$

素因数の和:2168

約数の個数: 72

約数和(自身を含む): 685473516

約数和(自身を除く): 429073506

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 37, 45, 74, 90, 111, 185, 222, 333, 370, 555, 666, 1110, 1369, 1665, 2081, 2738, 3330, 4107, 4162, 6243, 6845, 8214, 10405, 12321, 12486, 13690, 18729, 20535, 20810, 24642, 31215, 37458, 41070, 61605, 62430, 76997, 93645, 123210, 153994, 187290, 230991, 384985, 461982, 692973, 769970, 1154955, 1385946, 2309910, 2848889, 3464865, 5697778, 6929730, 8546667, 14244445, 17093334, 25640001, 28488890, 42733335, 51280002, 85466670, 128200005, 256400010]

約数ペア:

[(1, 256400010), (2, 128200005), (3, 85466670), (5, 51280002), (6, 42733335), (9, 28488890), (10, 25640001), (15, 17093334), (18, 14244445), (30, 8546667), (37, 6929730), (45, 5697778), (74, 3464865), (90, 2848889), (111, 2309910), (185, 1385946), (222, 1154955), (333, 769970), (370, 692973), (555, 461982), (666, 384985), (1110, 230991), (1369, 187290), (1665, 153994), (2081, 123210), (2738, 93645), (3330, 76997), (4107, 62430), (4162, 61605), (6243, 41070), (6845, 37458), (8214, 31215), (10405, 24642), (12321, 20810), (12486, 20535), (13690, 18729)]