20418996

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^2$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 54668320

約数和(自身を除く): 34249324

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 83, 114, 156, 166, 228, 247, 249, 332, 494, 498, 741, 988, 996, 1079, 1482, 1577, 2158, 2964, 3154, 3237, 4316, 4731, 6308, 6474, 6889, 9462, 12948, 13778, 18924, 20501, 20667, 27556, 41002, 41334, 61503, 82004, 82668, 89557, 123006, 130891, 179114, 246012, 261782, 268671, 358228, 392673, 523564, 537342, 785346, 1074684, 1570692, 1701583, 3403166, 5104749, 6806332, 10209498, 20418996]

約数ペア:

[(1, 20418996), (2, 10209498), (3, 6806332), (4, 5104749), (6, 3403166), (12, 1701583), (13, 1570692), (19, 1074684), (26, 785346), (38, 537342), (39, 523564), (52, 392673), (57, 358228), (76, 268671), (78, 261782), (83, 246012), (114, 179114), (156, 130891), (166, 123006), (228, 89557), (247, 82668), (249, 82004), (332, 61503), (494, 41334), (498, 41002), (741, 27556), (988, 20667), (996, 20501), (1079, 18924), (1482, 13778), (1577, 12948), (2158, 9462), (2964, 6889), (3154, 6474), (3237, 6308), (4316, 4731)]