21781890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18617}}^1$

素因数の和:18643

約数の個数: 48

約数和(自身を含む): 60992568

約数和(自身を除く): 39210678

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 18617, 37234, 55851, 93085, 111702, 167553, 186170, 242021, 279255, 335106, 484042, 558510, 726063, 837765, 1210105, 1452126, 1675530, 2178189, 2420210, 3630315, 4356378, 7260630, 10890945, 21781890]

約数ペア:

[(1, 21781890), (2, 10890945), (3, 7260630), (5, 4356378), (6, 3630315), (9, 2420210), (10, 2178189), (13, 1675530), (15, 1452126), (18, 1210105), (26, 837765), (30, 726063), (39, 558510), (45, 484042), (65, 335106), (78, 279255), (90, 242021), (117, 186170), (130, 167553), (195, 111702), (234, 93085), (390, 55851), (585, 37234), (1170, 18617)]