20568470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 43436736

約数和(自身を除く): 22868266

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 41, 65, 82, 85, 130, 170, 205, 221, 227, 410, 442, 454, 533, 697, 1066, 1105, 1135, 1394, 2210, 2270, 2665, 2951, 3485, 3859, 5330, 5902, 6970, 7718, 9061, 9307, 14755, 18122, 18614, 19295, 29510, 38590, 45305, 46535, 50167, 90610, 93070, 100334, 120991, 158219, 241982, 250835, 316438, 501670, 604955, 791095, 1209910, 1582190, 2056847, 4113694, 10284235, 20568470]

約数ペア:

[(1, 20568470), (2, 10284235), (5, 4113694), (10, 2056847), (13, 1582190), (17, 1209910), (26, 791095), (34, 604955), (41, 501670), (65, 316438), (82, 250835), (85, 241982), (130, 158219), (170, 120991), (205, 100334), (221, 93070), (227, 90610), (410, 50167), (442, 46535), (454, 45305), (533, 38590), (697, 29510), (1066, 19295), (1105, 18614), (1135, 18122), (1394, 14755), (2210, 9307), (2270, 9061), (2665, 7718), (2951, 6970), (3485, 5902), (3859, 5330)]