20747320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{773}}^1$

素因数の和:856

約数の個数: 64

約数和(自身を含む): 51827040

約数和(自身を除く): 31079720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 773, 1220, 1342, 1546, 2440, 2684, 3092, 3355, 3865, 5368, 6184, 6710, 7730, 8503, 13420, 15460, 17006, 26840, 30920, 34012, 42515, 47153, 68024, 85030, 94306, 170060, 188612, 235765, 340120, 377224, 471530, 518683, 943060, 1037366, 1886120, 2074732, 2593415, 4149464, 5186830, 10373660, 20747320]

約数ペア:

[(1, 20747320), (2, 10373660), (4, 5186830), (5, 4149464), (8, 2593415), (10, 2074732), (11, 1886120), (20, 1037366), (22, 943060), (40, 518683), (44, 471530), (55, 377224), (61, 340120), (88, 235765), (110, 188612), (122, 170060), (220, 94306), (244, 85030), (305, 68024), (440, 47153), (488, 42515), (610, 34012), (671, 30920), (773, 26840), (1220, 17006), (1342, 15460), (1546, 13420), (2440, 8503), (2684, 7730), (3092, 6710), (3355, 6184), (3865, 5368)]