638184135

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 1085644800

約数和(自身を除く): 447460665

約数列:

[1, 3, 5, 15, 31, 61, 93, 149, 151, 155, 183, 305, 447, 453, 465, 745, 755, 915, 1891, 2235, 2265, 4619, 4681, 5673, 9089, 9211, 9455, 13857, 14043, 22499, 23095, 23405, 27267, 27633, 28365, 45445, 46055, 67497, 69285, 70215, 112495, 136335, 138165, 281759, 285541, 337485, 697469, 845277, 856623, 1372439, 1408795, 1427705, 2092407, 3487345, 4117317, 4226385, 4283115, 6862195, 10462035, 20586585, 42545609, 127636827, 212728045, 638184135]

約数ペア:

[(1, 638184135), (3, 212728045), (5, 127636827), (15, 42545609), (31, 20586585), (61, 10462035), (93, 6862195), (149, 4283115), (151, 4226385), (155, 4117317), (183, 3487345), (305, 2092407), (447, 1427705), (453, 1408795), (465, 1372439), (745, 856623), (755, 845277), (915, 697469), (1891, 337485), (2235, 285541), (2265, 281759), (4619, 138165), (4681, 136335), (5673, 112495), (9089, 70215), (9211, 69285), (9455, 67497), (13857, 46055), (14043, 45445), (22499, 28365), (23095, 27633), (23405, 27267)]