20392740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{409}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 62233080

約数和(自身を除く): 41840340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 277, 409, 554, 818, 831, 1108, 1227, 1385, 1636, 1662, 2045, 2454, 2493, 2770, 3324, 3681, 4090, 4155, 4908, 4986, 5540, 6135, 7362, 8180, 8310, 9972, 12270, 12465, 14724, 16620, 18405, 24540, 24930, 36810, 49860, 73620, 113293, 226586, 339879, 453172, 566465, 679758, 1019637, 1132930, 1359516, 1699395, 2039274, 2265860, 3398790, 4078548, 5098185, 6797580, 10196370, 20392740]

約数ペア:

[(1, 20392740), (2, 10196370), (3, 6797580), (4, 5098185), (5, 4078548), (6, 3398790), (9, 2265860), (10, 2039274), (12, 1699395), (15, 1359516), (18, 1132930), (20, 1019637), (30, 679758), (36, 566465), (45, 453172), (60, 339879), (90, 226586), (180, 113293), (277, 73620), (409, 49860), (554, 36810), (818, 24930), (831, 24540), (1108, 18405), (1227, 16620), (1385, 14724), (1636, 12465), (1662, 12270), (2045, 9972), (2454, 8310), (2493, 8180), (2770, 7362), (3324, 6135), (3681, 5540), (4090, 4986), (4155, 4908)]