55991988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1$

素因数の和:865

約数の個数: 72

約数和(自身を含む): 153496616

約数和(自身を除く): 97504628

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 181, 234, 362, 468, 543, 661, 724, 1086, 1322, 1629, 1983, 2172, 2353, 2644, 3258, 3966, 4706, 5949, 6516, 7059, 7932, 8593, 9412, 11898, 14118, 17186, 21177, 23796, 25779, 28236, 34372, 42354, 51558, 77337, 84708, 103116, 119641, 154674, 239282, 309348, 358923, 478564, 717846, 1076769, 1435692, 1555333, 2153538, 3110666, 4307076, 4665999, 6221332, 9331998, 13997997, 18663996, 27995994, 55991988]

約数ペア:

[(1, 55991988), (2, 27995994), (3, 18663996), (4, 13997997), (6, 9331998), (9, 6221332), (12, 4665999), (13, 4307076), (18, 3110666), (26, 2153538), (36, 1555333), (39, 1435692), (52, 1076769), (78, 717846), (117, 478564), (156, 358923), (181, 309348), (234, 239282), (362, 154674), (468, 119641), (543, 103116), (661, 84708), (724, 77337), (1086, 51558), (1322, 42354), (1629, 34372), (1983, 28236), (2172, 25779), (2353, 23796), (2644, 21177), (3258, 17186), (3966, 14118), (4706, 11898), (5949, 9412), (6516, 8593), (7059, 7932)]