18767565

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 35354880

約数和(自身を除く): 16587315

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 53, 61, 129, 135, 159, 183, 215, 265, 305, 387, 477, 549, 645, 795, 915, 1161, 1431, 1647, 1935, 2279, 2385, 2623, 2745, 3233, 5805, 6837, 7155, 7869, 8235, 9699, 11395, 13115, 16165, 20511, 23607, 29097, 34185, 39345, 48495, 61533, 70821, 87291, 102555, 118035, 139019, 145485, 307665, 354105, 417057, 436455, 695095, 1251171, 2085285, 3753513, 6255855, 18767565]

約数ペア:

[(1, 18767565), (3, 6255855), (5, 3753513), (9, 2085285), (15, 1251171), (27, 695095), (43, 436455), (45, 417057), (53, 354105), (61, 307665), (129, 145485), (135, 139019), (159, 118035), (183, 102555), (215, 87291), (265, 70821), (305, 61533), (387, 48495), (477, 39345), (549, 34185), (645, 29097), (795, 23607), (915, 20511), (1161, 16165), (1431, 13115), (1647, 11395), (1935, 9699), (2279, 8235), (2385, 7869), (2623, 7155), (2745, 6837), (3233, 5805)]