18978480

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:675

約数の個数: 120

約数和(自身を含む): 65324688

約数和(自身を除く): 46346208

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 120, 129, 144, 172, 180, 215, 240, 258, 344, 360, 387, 430, 516, 613, 645, 688, 720, 774, 860, 1032, 1226, 1290, 1548, 1720, 1839, 1935, 2064, 2452, 2580, 3065, 3096, 3440, 3678, 3870, 4904, 5160, 5517, 6130, 6192, 7356, 7740, 9195, 9808, 10320, 11034, 12260, 14712, 15480, 18390, 22068, 24520, 26359, 27585, 29424, 30960, 36780, 44136, 49040, 52718, 55170, 73560, 79077, 88272, 105436, 110340, 131795, 147120, 158154, 210872, 220680, 237231, 263590, 316308, 395385, 421744, 441360, 474462, 527180, 632616, 790770, 948924, 1054360, 1186155, 1265232, 1581540, 1897848, 2108720, 2372310, 3163080, 3795696, 4744620, 6326160, 9489240, 18978480]

約数ペア:

[(1, 18978480), (2, 9489240), (3, 6326160), (4, 4744620), (5, 3795696), (6, 3163080), (8, 2372310), (9, 2108720), (10, 1897848), (12, 1581540), (15, 1265232), (16, 1186155), (18, 1054360), (20, 948924), (24, 790770), (30, 632616), (36, 527180), (40, 474462), (43, 441360), (45, 421744), (48, 395385), (60, 316308), (72, 263590), (80, 237231), (86, 220680), (90, 210872), (120, 158154), (129, 147120), (144, 131795), (172, 110340), (180, 105436), (215, 88272), (240, 79077), (258, 73560), (344, 55170), (360, 52718), (387, 49040), (430, 44136), (516, 36780), (613, 30960), (645, 29424), (688, 27585), (720, 26359), (774, 24520), (860, 22068), (1032, 18390), (1226, 15480), (1290, 14712), (1548, 12260), (1720, 11034), (1839, 10320), (1935, 9808), (2064, 9195), (2452, 7740), (2580, 7356), (3065, 6192), (3096, 6130), (3440, 5517), (3678, 5160), (3870, 4904)]