21882015

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{449}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 41148000

約数和(自身を除く): 19265985

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 361, 449, 513, 855, 1083, 1347, 1805, 2245, 2565, 3249, 4041, 5415, 6735, 8531, 9747, 12123, 16245, 20205, 25593, 42655, 48735, 60615, 76779, 127965, 162089, 230337, 383895, 486267, 810445, 1151685, 1458801, 2431335, 4376403, 7294005, 21882015]

約数ペア:

[(1, 21882015), (3, 7294005), (5, 4376403), (9, 2431335), (15, 1458801), (19, 1151685), (27, 810445), (45, 486267), (57, 383895), (95, 230337), (135, 162089), (171, 127965), (285, 76779), (361, 60615), (449, 48735), (513, 42655), (855, 25593), (1083, 20205), (1347, 16245), (1805, 12123), (2245, 9747), (2565, 8531), (3249, 6735), (4041, 5415)]