21842210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24122590

約数列:

[1, 2, 5, 10, 13, 19, 26, 37, 38, 65, 74, 95, 130, 185, 190, 239, 247, 370, 478, 481, 494, 703, 962, 1195, 1235, 1406, 2390, 2405, 2470, 3107, 3515, 4541, 4810, 6214, 7030, 8843, 9082, 9139, 15535, 17686, 18278, 22705, 31070, 44215, 45410, 45695, 59033, 88430, 91390, 114959, 118066, 168017, 229918, 295165, 336034, 574795, 590330, 840085, 1149590, 1680170, 2184221, 4368442, 10921105, 21842210]

約数ペア:

[(1, 21842210), (2, 10921105), (5, 4368442), (10, 2184221), (13, 1680170), (19, 1149590), (26, 840085), (37, 590330), (38, 574795), (65, 336034), (74, 295165), (95, 229918), (130, 168017), (185, 118066), (190, 114959), (239, 91390), (247, 88430), (370, 59033), (478, 45695), (481, 45410), (494, 44215), (703, 31070), (962, 22705), (1195, 18278), (1235, 17686), (1406, 15535), (2390, 9139), (2405, 9082), (2470, 8843), (3107, 7030), (3515, 6214), (4541, 4810)]