21813435

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{563}}^1$

素因数の和:625

約数の個数: 64

約数和(自身を含む): 45480960

約数和(自身を除く): 23667525

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 41, 45, 63, 105, 123, 135, 189, 205, 287, 315, 369, 563, 615, 861, 945, 1107, 1435, 1689, 1845, 2583, 2815, 3941, 4305, 5067, 5535, 7749, 8445, 11823, 12915, 15201, 19705, 23083, 25335, 35469, 38745, 59115, 69249, 76005, 106407, 115415, 161581, 177345, 207747, 346245, 484743, 532035, 623241, 807905, 1038735, 1454229, 2423715, 3116205, 4362687, 7271145, 21813435]

約数ペア:

[(1, 21813435), (3, 7271145), (5, 4362687), (7, 3116205), (9, 2423715), (15, 1454229), (21, 1038735), (27, 807905), (35, 623241), (41, 532035), (45, 484743), (63, 346245), (105, 207747), (123, 177345), (135, 161581), (189, 115415), (205, 106407), (287, 76005), (315, 69249), (369, 59115), (563, 38745), (615, 35469), (861, 25335), (945, 23083), (1107, 19705), (1435, 15201), (1689, 12915), (1845, 11823), (2583, 8445), (2815, 7749), (3941, 5535), (4305, 5067)]