21320352

素因数分解:

$2^5\times 3^2\times {\mathrm{181}}^1\times {\mathrm{409}}^1$

素因数の和:606

約数の個数: 72

約数和(自身を含む): 61113780

約数和(自身を除く): 39793428

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 181, 288, 362, 409, 543, 724, 818, 1086, 1227, 1448, 1629, 1636, 2172, 2454, 2896, 3258, 3272, 3681, 4344, 4908, 5792, 6516, 6544, 7362, 8688, 9816, 13032, 13088, 14724, 17376, 19632, 26064, 29448, 39264, 52128, 58896, 74029, 117792, 148058, 222087, 296116, 444174, 592232, 666261, 888348, 1184464, 1332522, 1776696, 2368928, 2665044, 3553392, 5330088, 7106784, 10660176, 21320352]

約数ペア:

[(1, 21320352), (2, 10660176), (3, 7106784), (4, 5330088), (6, 3553392), (8, 2665044), (9, 2368928), (12, 1776696), (16, 1332522), (18, 1184464), (24, 888348), (32, 666261), (36, 592232), (48, 444174), (72, 296116), (96, 222087), (144, 148058), (181, 117792), (288, 74029), (362, 58896), (409, 52128), (543, 39264), (724, 29448), (818, 26064), (1086, 19632), (1227, 17376), (1448, 14724), (1629, 13088), (1636, 13032), (2172, 9816), (2454, 8688), (2896, 7362), (3258, 6544), (3272, 6516), (3681, 5792), (4344, 4908)]