21000895020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16667377}}^1$

素因数の和:16667399

約数の個数: 72

約数和(自身を含む): 72803107104

約数和(自身を除く): 51802212084

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16667377, 33334754, 50002131, 66669508, 83336885, 100004262, 116671639, 150006393, 166673770, 200008524, 233343278, 250010655, 300012786, 333347540, 350014917, 466686556, 500021310, 583358195, 600025572, 700029834, 750031965, 1000042620, 1050044751, 1166716390, 1400059668, 1500063930, 1750074585, 2100089502, 2333432780, 3000127860, 3500149170, 4200179004, 5250223755, 7000298340, 10500447510, 21000895020]

約数ペア:

[(1, 21000895020), (2, 10500447510), (3, 7000298340), (4, 5250223755), (5, 4200179004), (6, 3500149170), (7, 3000127860), (9, 2333432780), (10, 2100089502), (12, 1750074585), (14, 1500063930), (15, 1400059668), (18, 1166716390), (20, 1050044751), (21, 1000042620), (28, 750031965), (30, 700029834), (35, 600025572), (36, 583358195), (42, 500021310), (45, 466686556), (60, 350014917), (63, 333347540), (70, 300012786), (84, 250010655), (90, 233343278), (105, 200008524), (126, 166673770), (140, 150006393), (180, 116671639), (210, 100004262), (252, 83336885), (315, 66669508), (420, 50002131), (630, 33334754), (1260, 16667377)]