20571008380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{271}}^1\times {\mathrm{1613}}^1$

素因数の和:2087

約数の個数: 96

約数和(自身を含む): 46980880128

約数和(自身を除く): 26409871748

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 181, 260, 271, 362, 542, 724, 905, 1084, 1355, 1613, 1810, 2353, 2710, 3226, 3523, 3620, 4706, 5420, 6452, 7046, 8065, 9412, 11765, 14092, 16130, 17615, 20969, 23530, 32260, 35230, 41938, 47060, 49051, 70460, 83876, 98102, 104845, 196204, 209690, 245255, 291953, 419380, 437123, 490510, 583906, 637663, 874246, 981020, 1167812, 1275326, 1459765, 1748492, 2185615, 2550652, 2919530, 3188315, 3795389, 4371230, 5682599, 5839060, 6376630, 7590778, 8742460, 11365198, 12753260, 15181556, 18976945, 22730396, 28412995, 37953890, 56825990, 75907780, 79119263, 113651980, 158238526, 316477052, 395596315, 791192630, 1028550419, 1582385260, 2057100838, 4114201676, 5142752095, 10285504190, 20571008380]

約数ペア:

[(1, 20571008380), (2, 10285504190), (4, 5142752095), (5, 4114201676), (10, 2057100838), (13, 1582385260), (20, 1028550419), (26, 791192630), (52, 395596315), (65, 316477052), (130, 158238526), (181, 113651980), (260, 79119263), (271, 75907780), (362, 56825990), (542, 37953890), (724, 28412995), (905, 22730396), (1084, 18976945), (1355, 15181556), (1613, 12753260), (1810, 11365198), (2353, 8742460), (2710, 7590778), (3226, 6376630), (3523, 5839060), (3620, 5682599), (4706, 4371230), (5420, 3795389), (6452, 3188315), (7046, 2919530), (8065, 2550652), (9412, 2185615), (11765, 1748492), (14092, 1459765), (16130, 1275326), (17615, 1167812), (20969, 981020), (23530, 874246), (32260, 637663), (35230, 583906), (41938, 490510), (47060, 437123), (49051, 419380), (70460, 291953), (83876, 245255), (98102, 209690), (104845, 196204)]