21050694

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:874

約数の個数: 72

約数和(自身を含む): 54952560

約数和(自身を除く): 33901866

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 29, 42, 49, 58, 63, 87, 98, 126, 147, 174, 203, 261, 294, 406, 441, 522, 609, 823, 882, 1218, 1421, 1646, 1827, 2469, 2842, 3654, 4263, 4938, 5761, 7407, 8526, 11522, 12789, 14814, 17283, 23867, 25578, 34566, 40327, 47734, 51849, 71601, 80654, 103698, 120981, 143202, 167069, 214803, 241962, 334138, 362943, 429606, 501207, 725886, 1002414, 1169483, 1503621, 2338966, 3007242, 3508449, 7016898, 10525347, 21050694]

約数ペア:

[(1, 21050694), (2, 10525347), (3, 7016898), (6, 3508449), (7, 3007242), (9, 2338966), (14, 1503621), (18, 1169483), (21, 1002414), (29, 725886), (42, 501207), (49, 429606), (58, 362943), (63, 334138), (87, 241962), (98, 214803), (126, 167069), (147, 143202), (174, 120981), (203, 103698), (261, 80654), (294, 71601), (406, 51849), (441, 47734), (522, 40327), (609, 34566), (823, 25578), (882, 23867), (1218, 17283), (1421, 14814), (1646, 12789), (1827, 11522), (2469, 8526), (2842, 7407), (3654, 5761), (4263, 4938)]