21214452

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 58285920

約数和(自身を除く): 37071468

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 109, 147, 196, 218, 294, 327, 331, 436, 588, 654, 662, 763, 993, 1308, 1324, 1526, 1986, 2289, 2317, 3052, 3972, 4578, 4634, 5341, 6951, 9156, 9268, 10682, 13902, 16023, 16219, 21364, 27804, 32046, 32438, 36079, 48657, 64092, 64876, 72158, 97314, 108237, 144316, 194628, 216474, 252553, 432948, 505106, 757659, 1010212, 1515318, 1767871, 3030636, 3535742, 5303613, 7071484, 10607226, 21214452]

約数ペア:

[(1, 21214452), (2, 10607226), (3, 7071484), (4, 5303613), (6, 3535742), (7, 3030636), (12, 1767871), (14, 1515318), (21, 1010212), (28, 757659), (42, 505106), (49, 432948), (84, 252553), (98, 216474), (109, 194628), (147, 144316), (196, 108237), (218, 97314), (294, 72158), (327, 64876), (331, 64092), (436, 48657), (588, 36079), (654, 32438), (662, 32046), (763, 27804), (993, 21364), (1308, 16219), (1324, 16023), (1526, 13902), (1986, 10682), (2289, 9268), (2317, 9156), (3052, 6951), (3972, 5341), (4578, 4634)]