66887720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 155347200

約数和(自身を除く): 88459480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 79, 122, 158, 244, 305, 316, 347, 395, 488, 610, 632, 694, 790, 1220, 1388, 1580, 1735, 2440, 2776, 3160, 3470, 4819, 6940, 9638, 13880, 19276, 21167, 24095, 27413, 38552, 42334, 48190, 54826, 84668, 96380, 105835, 109652, 137065, 169336, 192760, 211670, 219304, 274130, 423340, 548260, 846680, 1096520, 1672193, 3344386, 6688772, 8360965, 13377544, 16721930, 33443860, 66887720]

約数ペア:

[(1, 66887720), (2, 33443860), (4, 16721930), (5, 13377544), (8, 8360965), (10, 6688772), (20, 3344386), (40, 1672193), (61, 1096520), (79, 846680), (122, 548260), (158, 423340), (244, 274130), (305, 219304), (316, 211670), (347, 192760), (395, 169336), (488, 137065), (610, 109652), (632, 105835), (694, 96380), (790, 84668), (1220, 54826), (1388, 48190), (1580, 42334), (1735, 38552), (2440, 27413), (2776, 24095), (3160, 21167), (3470, 19276), (4819, 13880), (6940, 9638)]