1778668540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{109}}^1\times {\mathrm{613}}^1$

素因数の和:764

約数の個数: 96

約数和(自身を含む): 4152899520

約数和(自身を除く): 2374230980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 121, 218, 220, 242, 436, 484, 545, 605, 613, 1090, 1199, 1210, 1226, 1331, 2180, 2398, 2420, 2452, 2662, 3065, 4796, 5324, 5995, 6130, 6655, 6743, 11990, 12260, 13189, 13310, 13486, 23980, 26378, 26620, 26972, 33715, 52756, 65945, 66817, 67430, 74173, 131890, 133634, 134860, 145079, 148346, 263780, 267268, 290158, 296692, 334085, 370865, 580316, 668170, 725395, 734987, 741730, 815903, 1336340, 1450790, 1469974, 1483460, 1631806, 2901580, 2939948, 3263612, 3674935, 4079515, 7349870, 8084857, 8159030, 14699740, 16169714, 16318060, 32339428, 40424285, 80848570, 88933427, 161697140, 177866854, 355733708, 444667135, 889334270, 1778668540]

約数ペア:

[(1, 1778668540), (2, 889334270), (4, 444667135), (5, 355733708), (10, 177866854), (11, 161697140), (20, 88933427), (22, 80848570), (44, 40424285), (55, 32339428), (109, 16318060), (110, 16169714), (121, 14699740), (218, 8159030), (220, 8084857), (242, 7349870), (436, 4079515), (484, 3674935), (545, 3263612), (605, 2939948), (613, 2901580), (1090, 1631806), (1199, 1483460), (1210, 1469974), (1226, 1450790), (1331, 1336340), (2180, 815903), (2398, 741730), (2420, 734987), (2452, 725395), (2662, 668170), (3065, 580316), (4796, 370865), (5324, 334085), (5995, 296692), (6130, 290158), (6655, 267268), (6743, 263780), (11990, 148346), (12260, 145079), (13189, 134860), (13310, 133634), (13486, 131890), (23980, 74173), (26378, 67430), (26620, 66817), (26972, 65945), (33715, 52756)]