19812390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1373}}^1$

素因数の和:1433

約数の個数: 64

約数和(自身を含む): 52629696

約数和(自身を除く): 32817306

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 37, 39, 65, 74, 78, 111, 130, 185, 195, 222, 370, 390, 481, 555, 962, 1110, 1373, 1443, 2405, 2746, 2886, 4119, 4810, 6865, 7215, 8238, 13730, 14430, 17849, 20595, 35698, 41190, 50801, 53547, 89245, 101602, 107094, 152403, 178490, 254005, 267735, 304806, 508010, 535470, 660413, 762015, 1320826, 1524030, 1981239, 3302065, 3962478, 6604130, 9906195, 19812390]

約数ペア:

[(1, 19812390), (2, 9906195), (3, 6604130), (5, 3962478), (6, 3302065), (10, 1981239), (13, 1524030), (15, 1320826), (26, 762015), (30, 660413), (37, 535470), (39, 508010), (65, 304806), (74, 267735), (78, 254005), (111, 178490), (130, 152403), (185, 107094), (195, 101602), (222, 89245), (370, 53547), (390, 50801), (481, 41190), (555, 35698), (962, 20595), (1110, 17849), (1373, 14430), (1443, 13730), (2405, 8238), (2746, 7215), (2886, 6865), (4119, 4810)]