21936720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:197

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 53058480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 79, 80, 89, 104, 120, 130, 156, 158, 178, 195, 208, 237, 240, 260, 267, 312, 316, 356, 390, 395, 445, 474, 520, 534, 624, 632, 712, 780, 790, 890, 948, 1027, 1040, 1068, 1157, 1185, 1264, 1335, 1424, 1560, 1580, 1780, 1896, 2054, 2136, 2314, 2370, 2670, 3081, 3120, 3160, 3471, 3560, 3792, 4108, 4272, 4628, 4740, 5135, 5340, 5785, 6162, 6320, 6942, 7031, 7120, 8216, 9256, 9480, 10270, 10680, 11570, 12324, 13884, 14062, 15405, 16432, 17355, 18512, 18960, 20540, 21093, 21360, 23140, 24648, 27768, 28124, 30810, 34710, 35155, 41080, 42186, 46280, 49296, 55536, 56248, 61620, 69420, 70310, 82160, 84372, 91403, 92560, 105465, 112496, 123240, 138840, 140620, 168744, 182806, 210930, 246480, 274209, 277680, 281240, 337488, 365612, 421860, 457015, 548418, 562480, 731224, 843720, 914030, 1096836, 1371045, 1462448, 1687440, 1828060, 2193672, 2742090, 3656120, 4387344, 5484180, 7312240, 10968360, 21936720]

約数ペア:

[(1, 21936720), (2, 10968360), (3, 7312240), (4, 5484180), (5, 4387344), (6, 3656120), (8, 2742090), (10, 2193672), (12, 1828060), (13, 1687440), (15, 1462448), (16, 1371045), (20, 1096836), (24, 914030), (26, 843720), (30, 731224), (39, 562480), (40, 548418), (48, 457015), (52, 421860), (60, 365612), (65, 337488), (78, 281240), (79, 277680), (80, 274209), (89, 246480), (104, 210930), (120, 182806), (130, 168744), (156, 140620), (158, 138840), (178, 123240), (195, 112496), (208, 105465), (237, 92560), (240, 91403), (260, 84372), (267, 82160), (312, 70310), (316, 69420), (356, 61620), (390, 56248), (395, 55536), (445, 49296), (474, 46280), (520, 42186), (534, 41080), (624, 35155), (632, 34710), (712, 30810), (780, 28124), (790, 27768), (890, 24648), (948, 23140), (1027, 21360), (1040, 21093), (1068, 20540), (1157, 18960), (1185, 18512), (1264, 17355), (1335, 16432), (1424, 15405), (1560, 14062), (1580, 13884), (1780, 12324), (1896, 11570), (2054, 10680), (2136, 10270), (2314, 9480), (2370, 9256), (2670, 8216), (3081, 7120), (3120, 7031), (3160, 6942), (3471, 6320), (3560, 6162), (3792, 5785), (4108, 5340), (4272, 5135), (4628, 4740)]