20638744

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 25628456

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 89, 101, 164, 178, 202, 287, 328, 356, 404, 574, 623, 707, 712, 808, 1148, 1246, 1414, 2296, 2492, 2828, 3649, 4141, 4984, 5656, 7298, 8282, 8989, 14596, 16564, 17978, 25543, 28987, 29192, 33128, 35956, 51086, 57974, 62923, 71912, 102172, 115948, 125846, 204344, 231896, 251692, 368549, 503384, 737098, 1474196, 2579843, 2948392, 5159686, 10319372, 20638744]

約数ペア:

[(1, 20638744), (2, 10319372), (4, 5159686), (7, 2948392), (8, 2579843), (14, 1474196), (28, 737098), (41, 503384), (56, 368549), (82, 251692), (89, 231896), (101, 204344), (164, 125846), (178, 115948), (202, 102172), (287, 71912), (328, 62923), (356, 57974), (404, 51086), (574, 35956), (623, 33128), (707, 29192), (712, 28987), (808, 25543), (1148, 17978), (1246, 16564), (1414, 14596), (2296, 8989), (2492, 8282), (2828, 7298), (3649, 5656), (4141, 4984)]