65365420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{449}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 142884000

約数和(自身を除く): 77518580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 251, 290, 449, 502, 580, 898, 1004, 1255, 1796, 2245, 2510, 4490, 5020, 7279, 8980, 13021, 14558, 26042, 29116, 36395, 52084, 65105, 72790, 112699, 130210, 145580, 225398, 260420, 450796, 563495, 1126990, 2253980, 3268271, 6536542, 13073084, 16341355, 32682710, 65365420]

約数ペア:

[(1, 65365420), (2, 32682710), (4, 16341355), (5, 13073084), (10, 6536542), (20, 3268271), (29, 2253980), (58, 1126990), (116, 563495), (145, 450796), (251, 260420), (290, 225398), (449, 145580), (502, 130210), (580, 112699), (898, 72790), (1004, 65105), (1255, 52084), (1796, 36395), (2245, 29116), (2510, 26042), (4490, 14558), (5020, 13021), (7279, 8980)]