20154687080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1489}}^1\times {\mathrm{30763}}^1$

素因数の和:32274

約数の個数: 64

約数和(自身を含む): 49505428800

約数和(自身を除く): 29350741720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1489, 2978, 5956, 7445, 11912, 14890, 16379, 29780, 30763, 32758, 59560, 61526, 65516, 81895, 123052, 131032, 153815, 163790, 246104, 307630, 327580, 338393, 615260, 655160, 676786, 1230520, 1353572, 1691965, 2707144, 3383930, 6767860, 13535720, 45806107, 91612214, 183224428, 229030535, 366448856, 458061070, 503867177, 916122140, 1007734354, 1832244280, 2015468708, 2519335885, 4030937416, 5038671770, 10077343540, 20154687080]

約数ペア:

[(1, 20154687080), (2, 10077343540), (4, 5038671770), (5, 4030937416), (8, 2519335885), (10, 2015468708), (11, 1832244280), (20, 1007734354), (22, 916122140), (40, 503867177), (44, 458061070), (55, 366448856), (88, 229030535), (110, 183224428), (220, 91612214), (440, 45806107), (1489, 13535720), (2978, 6767860), (5956, 3383930), (7445, 2707144), (11912, 1691965), (14890, 1353572), (16379, 1230520), (29780, 676786), (30763, 655160), (32758, 615260), (59560, 338393), (61526, 327580), (65516, 307630), (81895, 246104), (123052, 163790), (131032, 153815)]