28657320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12569}}^1$

素因数の和:12602

約数の個数: 64

約数和(自身を含む): 90504000

約数和(自身を除く): 61846680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 456, 570, 760, 1140, 2280, 12569, 25138, 37707, 50276, 62845, 75414, 100552, 125690, 150828, 188535, 238811, 251380, 301656, 377070, 477622, 502760, 716433, 754140, 955244, 1194055, 1432866, 1508280, 1910488, 2388110, 2865732, 3582165, 4776220, 5731464, 7164330, 9552440, 14328660, 28657320]

約数ペア:

[(1, 28657320), (2, 14328660), (3, 9552440), (4, 7164330), (5, 5731464), (6, 4776220), (8, 3582165), (10, 2865732), (12, 2388110), (15, 1910488), (19, 1508280), (20, 1432866), (24, 1194055), (30, 955244), (38, 754140), (40, 716433), (57, 502760), (60, 477622), (76, 377070), (95, 301656), (114, 251380), (120, 238811), (152, 188535), (190, 150828), (228, 125690), (285, 100552), (380, 75414), (456, 62845), (570, 50276), (760, 37707), (1140, 25138), (2280, 12569)]