87857240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 128

約数和(自身を含む): 221616000

約数和(自身を除く): 133758760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 29, 37, 40, 46, 58, 74, 89, 92, 115, 116, 145, 148, 178, 184, 185, 230, 232, 290, 296, 356, 370, 445, 460, 580, 667, 712, 740, 851, 890, 920, 1073, 1160, 1334, 1480, 1702, 1780, 2047, 2146, 2581, 2668, 3293, 3335, 3404, 3560, 4094, 4255, 4292, 5162, 5336, 5365, 6586, 6670, 6808, 8188, 8510, 8584, 10235, 10324, 10730, 12905, 13172, 13340, 16376, 16465, 17020, 20470, 20648, 21460, 24679, 25810, 26344, 26680, 32930, 34040, 40940, 42920, 49358, 51620, 59363, 65860, 75739, 81880, 95497, 98716, 103240, 118726, 123395, 131720, 151478, 190994, 197432, 237452, 246790, 296815, 302956, 378695, 381988, 474904, 477485, 493580, 593630, 605912, 757390, 763976, 954970, 987160, 1187260, 1514780, 1909940, 2196431, 2374520, 3029560, 3819880, 4392862, 8785724, 10982155, 17571448, 21964310, 43928620, 87857240]

約数ペア:

[(1, 87857240), (2, 43928620), (4, 21964310), (5, 17571448), (8, 10982155), (10, 8785724), (20, 4392862), (23, 3819880), (29, 3029560), (37, 2374520), (40, 2196431), (46, 1909940), (58, 1514780), (74, 1187260), (89, 987160), (92, 954970), (115, 763976), (116, 757390), (145, 605912), (148, 593630), (178, 493580), (184, 477485), (185, 474904), (230, 381988), (232, 378695), (290, 302956), (296, 296815), (356, 246790), (370, 237452), (445, 197432), (460, 190994), (580, 151478), (667, 131720), (712, 123395), (740, 118726), (851, 103240), (890, 98716), (920, 95497), (1073, 81880), (1160, 75739), (1334, 65860), (1480, 59363), (1702, 51620), (1780, 49358), (2047, 42920), (2146, 40940), (2581, 34040), (2668, 32930), (3293, 26680), (3335, 26344), (3404, 25810), (3560, 24679), (4094, 21460), (4255, 20648), (4292, 20470), (5162, 17020), (5336, 16465), (5365, 16376), (6586, 13340), (6670, 13172), (6808, 12905), (8188, 10730), (8510, 10324), (8584, 10235)]