21843220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{719}}^1$

素因数の和:773

約数の個数: 72

約数和(自身を含む): 55157760

約数和(自身を除く): 33314540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 719, 868, 980, 1085, 1438, 1519, 2170, 2876, 3038, 3595, 4340, 5033, 6076, 7190, 7595, 10066, 14380, 15190, 20132, 22289, 25165, 30380, 35231, 44578, 50330, 70462, 89156, 100660, 111445, 140924, 156023, 176155, 222890, 312046, 352310, 445780, 624092, 704620, 780115, 1092161, 1560230, 2184322, 3120460, 4368644, 5460805, 10921610, 21843220]

約数ペア:

[(1, 21843220), (2, 10921610), (4, 5460805), (5, 4368644), (7, 3120460), (10, 2184322), (14, 1560230), (20, 1092161), (28, 780115), (31, 704620), (35, 624092), (49, 445780), (62, 352310), (70, 312046), (98, 222890), (124, 176155), (140, 156023), (155, 140924), (196, 111445), (217, 100660), (245, 89156), (310, 70462), (434, 50330), (490, 44578), (620, 35231), (719, 30380), (868, 25165), (980, 22289), (1085, 20132), (1438, 15190), (1519, 14380), (2170, 10066), (2876, 7595), (3038, 7190), (3595, 6076), (4340, 5033)]