20488365

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{773}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 38638080

約数和(自身を除く): 18149715

約数列:

[1, 3, 5, 9, 15, 19, 31, 45, 57, 93, 95, 155, 171, 279, 285, 465, 589, 773, 855, 1395, 1767, 2319, 2945, 3865, 5301, 6957, 8835, 11595, 14687, 23963, 26505, 34785, 44061, 71889, 73435, 119815, 132183, 215667, 220305, 359445, 455297, 660915, 1078335, 1365891, 2276485, 4097673, 6829455, 20488365]

約数ペア:

[(1, 20488365), (3, 6829455), (5, 4097673), (9, 2276485), (15, 1365891), (19, 1078335), (31, 660915), (45, 455297), (57, 359445), (93, 220305), (95, 215667), (155, 132183), (171, 119815), (279, 73435), (285, 71889), (465, 44061), (589, 34785), (773, 26505), (855, 23963), (1395, 14687), (1767, 11595), (2319, 8835), (2945, 6957), (3865, 5301)]