19819360

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11261}}^1$

素因数の和:11287

約数の個数: 48

約数和(自身を含む): 51084432

約数和(自身を除く): 31265072

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11261, 22522, 45044, 56305, 90088, 112610, 123871, 180176, 225220, 247742, 360352, 450440, 495484, 619355, 900880, 990968, 1238710, 1801760, 1981936, 2477420, 3963872, 4954840, 9909680, 19819360]

約数ペア:

[(1, 19819360), (2, 9909680), (4, 4954840), (5, 3963872), (8, 2477420), (10, 1981936), (11, 1801760), (16, 1238710), (20, 990968), (22, 900880), (32, 619355), (40, 495484), (44, 450440), (55, 360352), (80, 247742), (88, 225220), (110, 180176), (160, 123871), (176, 112610), (220, 90088), (352, 56305), (440, 45044), (880, 22522), (1760, 11261)]