21974540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1319}}^1$

素因数の和:1359

約数の個数: 72

約数和(自身を含む): 56881440

約数和(自身を除く): 34906900

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1319, 1666, 2380, 2638, 3332, 4165, 5276, 6595, 8330, 9233, 13190, 16660, 18466, 22423, 26380, 36932, 44846, 46165, 64631, 89692, 92330, 112115, 129262, 156961, 184660, 224230, 258524, 313922, 323155, 448460, 627844, 646310, 784805, 1098727, 1292620, 1569610, 2197454, 3139220, 4394908, 5493635, 10987270, 21974540]

約数ペア:

[(1, 21974540), (2, 10987270), (4, 5493635), (5, 4394908), (7, 3139220), (10, 2197454), (14, 1569610), (17, 1292620), (20, 1098727), (28, 784805), (34, 646310), (35, 627844), (49, 448460), (68, 323155), (70, 313922), (85, 258524), (98, 224230), (119, 184660), (140, 156961), (170, 129262), (196, 112115), (238, 92330), (245, 89692), (340, 64631), (476, 46165), (490, 44846), (595, 36932), (833, 26380), (980, 22423), (1190, 18466), (1319, 16660), (1666, 13190), (2380, 9233), (2638, 8330), (3332, 6595), (4165, 5276)]