21225820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{179}}^1$

素因数の和:224

約数の個数: 108

約数和(自身を含む): 57312360

約数和(自身を除く): 36086540

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 121, 140, 154, 179, 196, 220, 242, 245, 308, 358, 385, 484, 490, 539, 605, 716, 770, 847, 895, 980, 1078, 1210, 1253, 1540, 1694, 1790, 1969, 2156, 2420, 2506, 2695, 3388, 3580, 3938, 4235, 5012, 5390, 5929, 6265, 7876, 8470, 8771, 9845, 10780, 11858, 12530, 13783, 16940, 17542, 19690, 21659, 23716, 25060, 27566, 29645, 35084, 39380, 43318, 43855, 55132, 59290, 68915, 86636, 87710, 96481, 108295, 118580, 137830, 151613, 175420, 192962, 216590, 275660, 303226, 385924, 433180, 482405, 606452, 758065, 964810, 1061291, 1516130, 1929620, 2122582, 3032260, 4245164, 5306455, 10612910, 21225820]

約数ペア:

[(1, 21225820), (2, 10612910), (4, 5306455), (5, 4245164), (7, 3032260), (10, 2122582), (11, 1929620), (14, 1516130), (20, 1061291), (22, 964810), (28, 758065), (35, 606452), (44, 482405), (49, 433180), (55, 385924), (70, 303226), (77, 275660), (98, 216590), (110, 192962), (121, 175420), (140, 151613), (154, 137830), (179, 118580), (196, 108295), (220, 96481), (242, 87710), (245, 86636), (308, 68915), (358, 59290), (385, 55132), (484, 43855), (490, 43318), (539, 39380), (605, 35084), (716, 29645), (770, 27566), (847, 25060), (895, 23716), (980, 21659), (1078, 19690), (1210, 17542), (1253, 16940), (1540, 13783), (1694, 12530), (1790, 11858), (1969, 10780), (2156, 9845), (2420, 8771), (2506, 8470), (2695, 7876), (3388, 6265), (3580, 5929), (3938, 5390), (4235, 5012)]