65138440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 152824320

約数和(自身を除く): 87685880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 131, 155, 248, 262, 310, 401, 524, 620, 655, 802, 1048, 1240, 1310, 1604, 2005, 2620, 3208, 4010, 4061, 5240, 8020, 8122, 12431, 16040, 16244, 20305, 24862, 32488, 40610, 49724, 52531, 62155, 81220, 99448, 105062, 124310, 162440, 210124, 248620, 262655, 420248, 497240, 525310, 1050620, 1628461, 2101240, 3256922, 6513844, 8142305, 13027688, 16284610, 32569220, 65138440]

約数ペア:

[(1, 65138440), (2, 32569220), (4, 16284610), (5, 13027688), (8, 8142305), (10, 6513844), (20, 3256922), (31, 2101240), (40, 1628461), (62, 1050620), (124, 525310), (131, 497240), (155, 420248), (248, 262655), (262, 248620), (310, 210124), (401, 162440), (524, 124310), (620, 105062), (655, 99448), (802, 81220), (1048, 62155), (1240, 52531), (1310, 49724), (1604, 40610), (2005, 32488), (2620, 24862), (3208, 20305), (4010, 16244), (4061, 16040), (5240, 12431), (8020, 8122)]