21739620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{271}}^1$

素因数の和:481

約数の個数: 96

約数和(自身を含む): 70189056

約数和(自身を除く): 48449436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 191, 210, 271, 382, 420, 542, 573, 764, 813, 955, 1084, 1146, 1337, 1355, 1626, 1897, 1910, 2292, 2674, 2710, 2865, 3252, 3794, 3820, 4011, 4065, 5348, 5420, 5691, 5730, 6685, 7588, 8022, 8130, 9485, 11382, 11460, 13370, 16044, 16260, 18970, 20055, 22764, 26740, 28455, 37940, 40110, 51761, 56910, 80220, 103522, 113820, 155283, 207044, 258805, 310566, 362327, 517610, 621132, 724654, 776415, 1035220, 1086981, 1449308, 1552830, 1811635, 2173962, 3105660, 3623270, 4347924, 5434905, 7246540, 10869810, 21739620]

約数ペア:

[(1, 21739620), (2, 10869810), (3, 7246540), (4, 5434905), (5, 4347924), (6, 3623270), (7, 3105660), (10, 2173962), (12, 1811635), (14, 1552830), (15, 1449308), (20, 1086981), (21, 1035220), (28, 776415), (30, 724654), (35, 621132), (42, 517610), (60, 362327), (70, 310566), (84, 258805), (105, 207044), (140, 155283), (191, 113820), (210, 103522), (271, 80220), (382, 56910), (420, 51761), (542, 40110), (573, 37940), (764, 28455), (813, 26740), (955, 22764), (1084, 20055), (1146, 18970), (1337, 16260), (1355, 16044), (1626, 13370), (1897, 11460), (1910, 11382), (2292, 9485), (2674, 8130), (2710, 8022), (2865, 7588), (3252, 6685), (3794, 5730), (3820, 5691), (4011, 5420), (4065, 5348)]