20344720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:464

約数の個数: 80

約数和(自身を含む): 52585920

約数和(自身を除く): 32241200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 61, 80, 88, 110, 122, 176, 220, 244, 305, 379, 440, 488, 610, 671, 758, 880, 976, 1220, 1342, 1516, 1895, 2440, 2684, 3032, 3355, 3790, 4169, 4880, 5368, 6064, 6710, 7580, 8338, 10736, 13420, 15160, 16676, 20845, 23119, 26840, 30320, 33352, 41690, 46238, 53680, 66704, 83380, 92476, 115595, 166760, 184952, 231190, 254309, 333520, 369904, 462380, 508618, 924760, 1017236, 1271545, 1849520, 2034472, 2543090, 4068944, 5086180, 10172360, 20344720]

約数ペア:

[(1, 20344720), (2, 10172360), (4, 5086180), (5, 4068944), (8, 2543090), (10, 2034472), (11, 1849520), (16, 1271545), (20, 1017236), (22, 924760), (40, 508618), (44, 462380), (55, 369904), (61, 333520), (80, 254309), (88, 231190), (110, 184952), (122, 166760), (176, 115595), (220, 92476), (244, 83380), (305, 66704), (379, 53680), (440, 46238), (488, 41690), (610, 33352), (671, 30320), (758, 26840), (880, 23119), (976, 20845), (1220, 16676), (1342, 15160), (1516, 13420), (1895, 10736), (2440, 8338), (2684, 7580), (3032, 6710), (3355, 6064), (3790, 5368), (4169, 4880)]