18213720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{21683}}^1$

素因数の和:21704

約数の個数: 64

約数和(自身を含む): 62449920

約数和(自身を除く): 44236200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 21683, 43366, 65049, 86732, 108415, 130098, 151781, 173464, 216830, 260196, 303562, 325245, 433660, 455343, 520392, 607124, 650490, 758905, 867320, 910686, 1214248, 1300980, 1517810, 1821372, 2276715, 2601960, 3035620, 3642744, 4553430, 6071240, 9106860, 18213720]

約数ペア:

[(1, 18213720), (2, 9106860), (3, 6071240), (4, 4553430), (5, 3642744), (6, 3035620), (7, 2601960), (8, 2276715), (10, 1821372), (12, 1517810), (14, 1300980), (15, 1214248), (20, 910686), (21, 867320), (24, 758905), (28, 650490), (30, 607124), (35, 520392), (40, 455343), (42, 433660), (56, 325245), (60, 303562), (70, 260196), (84, 216830), (105, 173464), (120, 151781), (140, 130098), (168, 108415), (210, 86732), (280, 65049), (420, 43366), (840, 21683)]