256509840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:341

約数の個数: 160

約数和(自身を含む): 819947520

約数和(自身を除く): 563437680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 79, 80, 83, 120, 158, 163, 166, 237, 240, 249, 316, 326, 332, 395, 415, 474, 489, 498, 632, 652, 664, 790, 815, 830, 948, 978, 996, 1185, 1245, 1264, 1304, 1328, 1580, 1630, 1660, 1896, 1956, 1992, 2370, 2445, 2490, 2608, 3160, 3260, 3320, 3792, 3912, 3984, 4740, 4890, 4980, 6320, 6520, 6557, 6640, 7824, 9480, 9780, 9960, 12877, 13040, 13114, 13529, 18960, 19560, 19671, 19920, 25754, 26228, 27058, 32785, 38631, 39120, 39342, 40587, 51508, 52456, 54116, 64385, 65570, 67645, 77262, 78684, 81174, 98355, 103016, 104912, 108232, 128770, 131140, 135290, 154524, 157368, 162348, 193155, 196710, 202935, 206032, 216464, 257540, 262280, 270580, 309048, 314736, 324696, 386310, 393420, 405870, 515080, 524560, 541160, 618096, 649392, 772620, 786840, 811740, 1030160, 1068791, 1082320, 1545240, 1573680, 1623480, 2137582, 3090480, 3206373, 3246960, 4275164, 5343955, 6412746, 8550328, 10687910, 12825492, 16031865, 17100656, 21375820, 25650984, 32063730, 42751640, 51301968, 64127460, 85503280, 128254920, 256509840]

約数ペア:

[(1, 256509840), (2, 128254920), (3, 85503280), (4, 64127460), (5, 51301968), (6, 42751640), (8, 32063730), (10, 25650984), (12, 21375820), (15, 17100656), (16, 16031865), (20, 12825492), (24, 10687910), (30, 8550328), (40, 6412746), (48, 5343955), (60, 4275164), (79, 3246960), (80, 3206373), (83, 3090480), (120, 2137582), (158, 1623480), (163, 1573680), (166, 1545240), (237, 1082320), (240, 1068791), (249, 1030160), (316, 811740), (326, 786840), (332, 772620), (395, 649392), (415, 618096), (474, 541160), (489, 524560), (498, 515080), (632, 405870), (652, 393420), (664, 386310), (790, 324696), (815, 314736), (830, 309048), (948, 270580), (978, 262280), (996, 257540), (1185, 216464), (1245, 206032), (1264, 202935), (1304, 196710), (1328, 193155), (1580, 162348), (1630, 157368), (1660, 154524), (1896, 135290), (1956, 131140), (1992, 128770), (2370, 108232), (2445, 104912), (2490, 103016), (2608, 98355), (3160, 81174), (3260, 78684), (3320, 77262), (3792, 67645), (3912, 65570), (3984, 64385), (4740, 54116), (4890, 52456), (4980, 51508), (6320, 40587), (6520, 39342), (6557, 39120), (6640, 38631), (7824, 32785), (9480, 27058), (9780, 26228), (9960, 25754), (12877, 19920), (13040, 19671), (13114, 19560), (13529, 18960)]