19880406

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1$

素因数の和:310

約数の個数: 96

約数和(自身を含む): 54250560

約数和(自身を除く): 34370154

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 53, 63, 78, 91, 106, 117, 126, 159, 182, 229, 234, 273, 318, 371, 458, 477, 546, 687, 689, 742, 819, 954, 1113, 1374, 1378, 1603, 1638, 2061, 2067, 2226, 2977, 3206, 3339, 4122, 4134, 4809, 4823, 5954, 6201, 6678, 8931, 9618, 9646, 12137, 12402, 14427, 14469, 17862, 20839, 24274, 26793, 28854, 28938, 36411, 41678, 43407, 53586, 62517, 72822, 84959, 86814, 109233, 125034, 157781, 169918, 187551, 218466, 254877, 315562, 375102, 473343, 509754, 764631, 946686, 1104467, 1420029, 1529262, 2208934, 2840058, 3313401, 6626802, 9940203, 19880406]

約数ペア:

[(1, 19880406), (2, 9940203), (3, 6626802), (6, 3313401), (7, 2840058), (9, 2208934), (13, 1529262), (14, 1420029), (18, 1104467), (21, 946686), (26, 764631), (39, 509754), (42, 473343), (53, 375102), (63, 315562), (78, 254877), (91, 218466), (106, 187551), (117, 169918), (126, 157781), (159, 125034), (182, 109233), (229, 86814), (234, 84959), (273, 72822), (318, 62517), (371, 53586), (458, 43407), (477, 41678), (546, 36411), (687, 28938), (689, 28854), (742, 26793), (819, 24274), (954, 20839), (1113, 17862), (1374, 14469), (1378, 14427), (1603, 12402), (1638, 12137), (2061, 9646), (2067, 9618), (2226, 8931), (2977, 6678), (3206, 6201), (3339, 5954), (4122, 4823), (4134, 4809)]