87480920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 203243040

約数和(自身を除く): 115762120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 181, 215, 281, 344, 362, 430, 562, 724, 860, 905, 1124, 1405, 1448, 1720, 1810, 2248, 2810, 3620, 5620, 7240, 7783, 11240, 12083, 15566, 24166, 31132, 38915, 48332, 50861, 60415, 62264, 77830, 96664, 101722, 120830, 155660, 203444, 241660, 254305, 311320, 406888, 483320, 508610, 1017220, 2034440, 2187023, 4374046, 8748092, 10935115, 17496184, 21870230, 43740460, 87480920]

約数ペア:

[(1, 87480920), (2, 43740460), (4, 21870230), (5, 17496184), (8, 10935115), (10, 8748092), (20, 4374046), (40, 2187023), (43, 2034440), (86, 1017220), (172, 508610), (181, 483320), (215, 406888), (281, 311320), (344, 254305), (362, 241660), (430, 203444), (562, 155660), (724, 120830), (860, 101722), (905, 96664), (1124, 77830), (1405, 62264), (1448, 60415), (1720, 50861), (1810, 48332), (2248, 38915), (2810, 31132), (3620, 24166), (5620, 15566), (7240, 12083), (7783, 11240)]