203477720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1\times {\mathrm{421}}^1$

素因数の和:756

約数の個数: 64

約数和(自身を含む): 471255840

約数和(自身を除く): 267778120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 281, 344, 421, 430, 562, 842, 860, 1124, 1405, 1684, 1720, 2105, 2248, 2810, 3368, 4210, 5620, 8420, 11240, 12083, 16840, 18103, 24166, 36206, 48332, 60415, 72412, 90515, 96664, 118301, 120830, 144824, 181030, 236602, 241660, 362060, 473204, 483320, 591505, 724120, 946408, 1183010, 2366020, 4732040, 5086943, 10173886, 20347772, 25434715, 40695544, 50869430, 101738860, 203477720]

約数ペア:

[(1, 203477720), (2, 101738860), (4, 50869430), (5, 40695544), (8, 25434715), (10, 20347772), (20, 10173886), (40, 5086943), (43, 4732040), (86, 2366020), (172, 1183010), (215, 946408), (281, 724120), (344, 591505), (421, 483320), (430, 473204), (562, 362060), (842, 241660), (860, 236602), (1124, 181030), (1405, 144824), (1684, 120830), (1720, 118301), (2105, 96664), (2248, 90515), (2810, 72412), (3368, 60415), (4210, 48332), (5620, 36206), (8420, 24166), (11240, 18103), (12083, 16840)]