21004050

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{4517}}^1$

素因数の和:4563

約数の個数: 48

約数和(自身を含む): 53782272

約数和(自身を除く): 32778222

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 150, 155, 186, 310, 465, 775, 930, 1550, 2325, 4517, 4650, 9034, 13551, 22585, 27102, 45170, 67755, 112925, 135510, 140027, 225850, 280054, 338775, 420081, 677550, 700135, 840162, 1400270, 2100405, 3500675, 4200810, 7001350, 10502025, 21004050]

約数ペア:

[(1, 21004050), (2, 10502025), (3, 7001350), (5, 4200810), (6, 3500675), (10, 2100405), (15, 1400270), (25, 840162), (30, 700135), (31, 677550), (50, 420081), (62, 338775), (75, 280054), (93, 225850), (150, 140027), (155, 135510), (186, 112925), (310, 67755), (465, 45170), (775, 27102), (930, 22585), (1550, 13551), (2325, 9034), (4517, 4650)]