78765640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1699}}^1$

素因数の和:1790

約数の個数: 64

約数和(自身を含む): 189720000

約数和(自身を除く): 110954360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 488, 610, 760, 1159, 1220, 1699, 2318, 2440, 3398, 4636, 5795, 6796, 8495, 9272, 11590, 13592, 16990, 23180, 32281, 33980, 46360, 64562, 67960, 103639, 129124, 161405, 207278, 258248, 322810, 414556, 518195, 645620, 829112, 1036390, 1291240, 1969141, 2072780, 3938282, 4145560, 7876564, 9845705, 15753128, 19691410, 39382820, 78765640]

約数ペア:

[(1, 78765640), (2, 39382820), (4, 19691410), (5, 15753128), (8, 9845705), (10, 7876564), (19, 4145560), (20, 3938282), (38, 2072780), (40, 1969141), (61, 1291240), (76, 1036390), (95, 829112), (122, 645620), (152, 518195), (190, 414556), (244, 322810), (305, 258248), (380, 207278), (488, 161405), (610, 129124), (760, 103639), (1159, 67960), (1220, 64562), (1699, 46360), (2318, 33980), (2440, 32281), (3398, 23180), (4636, 16990), (5795, 13592), (6796, 11590), (8495, 9272)]