18980520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^3$

素因数の和:96

約数の個数: 128

約数和(自身を含む): 64108800

約数和(自身を除く): 45128280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 23, 24, 26, 30, 39, 40, 46, 52, 60, 65, 69, 78, 92, 104, 115, 120, 130, 138, 156, 184, 195, 230, 260, 276, 299, 312, 345, 390, 460, 520, 529, 552, 598, 690, 780, 897, 920, 1058, 1196, 1380, 1495, 1560, 1587, 1794, 2116, 2392, 2645, 2760, 2990, 3174, 3588, 4232, 4485, 5290, 5980, 6348, 6877, 7176, 7935, 8970, 10580, 11960, 12167, 12696, 13754, 15870, 17940, 20631, 21160, 24334, 27508, 31740, 34385, 35880, 36501, 41262, 48668, 55016, 60835, 63480, 68770, 73002, 82524, 97336, 103155, 121670, 137540, 146004, 158171, 165048, 182505, 206310, 243340, 275080, 292008, 316342, 365010, 412620, 474513, 486680, 632684, 730020, 790855, 825240, 949026, 1265368, 1460040, 1581710, 1898052, 2372565, 3163420, 3796104, 4745130, 6326840, 9490260, 18980520]

約数ペア:

[(1, 18980520), (2, 9490260), (3, 6326840), (4, 4745130), (5, 3796104), (6, 3163420), (8, 2372565), (10, 1898052), (12, 1581710), (13, 1460040), (15, 1265368), (20, 949026), (23, 825240), (24, 790855), (26, 730020), (30, 632684), (39, 486680), (40, 474513), (46, 412620), (52, 365010), (60, 316342), (65, 292008), (69, 275080), (78, 243340), (92, 206310), (104, 182505), (115, 165048), (120, 158171), (130, 146004), (138, 137540), (156, 121670), (184, 103155), (195, 97336), (230, 82524), (260, 73002), (276, 68770), (299, 63480), (312, 60835), (345, 55016), (390, 48668), (460, 41262), (520, 36501), (529, 35880), (552, 34385), (598, 31740), (690, 27508), (780, 24334), (897, 21160), (920, 20631), (1058, 17940), (1196, 15870), (1380, 13754), (1495, 12696), (1560, 12167), (1587, 11960), (1794, 10580), (2116, 8970), (2392, 7935), (2645, 7176), (2760, 6877), (2990, 6348), (3174, 5980), (3588, 5290), (4232, 4485)]