31980780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:280

約数の個数: 144

約数和(自身を含む): 106404480

約数和(自身を除く): 74423700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 79, 90, 117, 130, 156, 158, 173, 180, 195, 234, 237, 260, 316, 346, 390, 395, 468, 474, 519, 585, 692, 711, 780, 790, 865, 948, 1027, 1038, 1170, 1185, 1422, 1557, 1580, 1730, 2054, 2076, 2249, 2340, 2370, 2595, 2844, 3081, 3114, 3460, 3555, 4108, 4498, 4740, 5135, 5190, 6162, 6228, 6747, 7110, 7785, 8996, 9243, 10270, 10380, 11245, 12324, 13494, 13667, 14220, 15405, 15570, 18486, 20241, 20540, 22490, 26988, 27334, 30810, 31140, 33735, 36972, 40482, 41001, 44980, 46215, 54668, 61620, 67470, 68335, 80964, 82002, 92430, 101205, 123003, 134940, 136670, 164004, 177671, 184860, 202410, 205005, 246006, 273340, 355342, 404820, 410010, 492012, 533013, 615015, 710684, 820020, 888355, 1066026, 1230030, 1599039, 1776710, 2132052, 2460060, 2665065, 3198078, 3553420, 5330130, 6396156, 7995195, 10660260, 15990390, 31980780]

約数ペア:

[(1, 31980780), (2, 15990390), (3, 10660260), (4, 7995195), (5, 6396156), (6, 5330130), (9, 3553420), (10, 3198078), (12, 2665065), (13, 2460060), (15, 2132052), (18, 1776710), (20, 1599039), (26, 1230030), (30, 1066026), (36, 888355), (39, 820020), (45, 710684), (52, 615015), (60, 533013), (65, 492012), (78, 410010), (79, 404820), (90, 355342), (117, 273340), (130, 246006), (156, 205005), (158, 202410), (173, 184860), (180, 177671), (195, 164004), (234, 136670), (237, 134940), (260, 123003), (316, 101205), (346, 92430), (390, 82002), (395, 80964), (468, 68335), (474, 67470), (519, 61620), (585, 54668), (692, 46215), (711, 44980), (780, 41001), (790, 40482), (865, 36972), (948, 33735), (1027, 31140), (1038, 30810), (1170, 27334), (1185, 26988), (1422, 22490), (1557, 20540), (1580, 20241), (1730, 18486), (2054, 15570), (2076, 15405), (2249, 14220), (2340, 13667), (2370, 13494), (2595, 12324), (2844, 11245), (3081, 10380), (3114, 10270), (3460, 9243), (3555, 8996), (4108, 7785), (4498, 7110), (4740, 6747), (5135, 6228), (5190, 6162)]