21491409904

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{1889}}^1\times {\mathrm{10613}}^1$

素因数の和:12577

約数の個数: 40

約数和(自身を含む): 42287449680

約数和(自身を除く): 20796039776

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 1889, 3778, 7556, 10613, 15112, 21226, 30224, 42452, 84904, 126563, 169808, 253126, 506252, 711071, 1012504, 1422142, 2025008, 2844284, 5688568, 11377136, 20047957, 40095914, 80191828, 160383656, 320767312, 1343213119, 2686426238, 5372852476, 10745704952, 21491409904]

約数ペア:

[(1, 21491409904), (2, 10745704952), (4, 5372852476), (8, 2686426238), (16, 1343213119), (67, 320767312), (134, 160383656), (268, 80191828), (536, 40095914), (1072, 20047957), (1889, 11377136), (3778, 5688568), (7556, 2844284), (10613, 2025008), (15112, 1422142), (21226, 1012504), (30224, 711071), (42452, 506252), (84904, 253126), (126563, 169808)]