21953490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:515

約数の個数: 64

約数和(自身を含む): 57238272

約数和(自身を除く): 35284782

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 181, 195, 311, 362, 390, 543, 622, 905, 933, 1086, 1555, 1810, 1866, 2353, 2715, 3110, 4043, 4665, 4706, 5430, 7059, 8086, 9330, 11765, 12129, 14118, 20215, 23530, 24258, 35295, 40430, 56291, 60645, 70590, 112582, 121290, 168873, 281455, 337746, 562910, 731783, 844365, 1463566, 1688730, 2195349, 3658915, 4390698, 7317830, 10976745, 21953490]

約数ペア:

[(1, 21953490), (2, 10976745), (3, 7317830), (5, 4390698), (6, 3658915), (10, 2195349), (13, 1688730), (15, 1463566), (26, 844365), (30, 731783), (39, 562910), (65, 337746), (78, 281455), (130, 168873), (181, 121290), (195, 112582), (311, 70590), (362, 60645), (390, 56291), (543, 40430), (622, 35295), (905, 24258), (933, 23530), (1086, 20215), (1555, 14118), (1810, 12129), (1866, 11765), (2353, 9330), (2715, 8086), (3110, 7059), (4043, 5430), (4665, 4706)]