21683060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2539}}^1$

素因数の和:2616

約数の個数: 48

約数和(自身を含む): 52913280

約数和(自身を除く): 31230220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 2539, 4270, 5078, 8540, 10156, 12695, 17773, 25390, 35546, 50780, 71092, 88865, 154879, 177730, 309758, 355460, 619516, 774395, 1084153, 1548790, 2168306, 3097580, 4336612, 5420765, 10841530, 21683060]

約数ペア:

[(1, 21683060), (2, 10841530), (4, 5420765), (5, 4336612), (7, 3097580), (10, 2168306), (14, 1548790), (20, 1084153), (28, 774395), (35, 619516), (61, 355460), (70, 309758), (122, 177730), (140, 154879), (244, 88865), (305, 71092), (427, 50780), (610, 35546), (854, 25390), (1220, 17773), (1708, 12695), (2135, 10156), (2539, 8540), (4270, 5078)]