20460240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:357

約数の個数: 120

約数和(自身を含む): 69532008

約数和(自身を除く): 49071768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 157, 180, 181, 240, 314, 360, 362, 471, 543, 628, 720, 724, 785, 905, 942, 1086, 1256, 1413, 1448, 1570, 1629, 1810, 1884, 2172, 2355, 2512, 2715, 2826, 2896, 3140, 3258, 3620, 3768, 4344, 4710, 5430, 5652, 6280, 6516, 7065, 7240, 7536, 8145, 8688, 9420, 10860, 11304, 12560, 13032, 14130, 14480, 16290, 18840, 21720, 22608, 26064, 28260, 28417, 32580, 37680, 43440, 56520, 56834, 65160, 85251, 113040, 113668, 130320, 142085, 170502, 227336, 255753, 284170, 341004, 426255, 454672, 511506, 568340, 682008, 852510, 1023012, 1136680, 1278765, 1364016, 1705020, 2046024, 2273360, 2557530, 3410040, 4092048, 5115060, 6820080, 10230120, 20460240]

約数ペア:

[(1, 20460240), (2, 10230120), (3, 6820080), (4, 5115060), (5, 4092048), (6, 3410040), (8, 2557530), (9, 2273360), (10, 2046024), (12, 1705020), (15, 1364016), (16, 1278765), (18, 1136680), (20, 1023012), (24, 852510), (30, 682008), (36, 568340), (40, 511506), (45, 454672), (48, 426255), (60, 341004), (72, 284170), (80, 255753), (90, 227336), (120, 170502), (144, 142085), (157, 130320), (180, 113668), (181, 113040), (240, 85251), (314, 65160), (360, 56834), (362, 56520), (471, 43440), (543, 37680), (628, 32580), (720, 28417), (724, 28260), (785, 26064), (905, 22608), (942, 21720), (1086, 18840), (1256, 16290), (1413, 14480), (1448, 14130), (1570, 13032), (1629, 12560), (1810, 11304), (1884, 10860), (2172, 9420), (2355, 8688), (2512, 8145), (2715, 7536), (2826, 7240), (2896, 7065), (3140, 6516), (3258, 6280), (3620, 5652), (3768, 5430), (4344, 4710)]