21754710

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:622

約数の個数: 64

約数和(自身を含む): 58449600

約数和(自身を除く): 36694890

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 197, 270, 394, 409, 591, 818, 985, 1182, 1227, 1773, 1970, 2045, 2454, 2955, 3546, 3681, 4090, 5319, 5910, 6135, 7362, 8865, 10638, 11043, 12270, 17730, 18405, 22086, 26595, 36810, 53190, 55215, 80573, 110430, 161146, 241719, 402865, 483438, 725157, 805730, 1208595, 1450314, 2175471, 2417190, 3625785, 4350942, 7251570, 10877355, 21754710]

約数ペア:

[(1, 21754710), (2, 10877355), (3, 7251570), (5, 4350942), (6, 3625785), (9, 2417190), (10, 2175471), (15, 1450314), (18, 1208595), (27, 805730), (30, 725157), (45, 483438), (54, 402865), (90, 241719), (135, 161146), (197, 110430), (270, 80573), (394, 55215), (409, 53190), (591, 36810), (818, 26595), (985, 22086), (1182, 18405), (1227, 17730), (1773, 12270), (1970, 11043), (2045, 10638), (2454, 8865), (2955, 7362), (3546, 6135), (3681, 5910), (4090, 5319)]