81907605

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 161973504

約数和(自身を除く): 80065899

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 47, 65, 81, 117, 135, 141, 195, 235, 331, 351, 405, 423, 585, 611, 705, 993, 1053, 1269, 1655, 1755, 1833, 2115, 2979, 3055, 3807, 4303, 4965, 5265, 5499, 6345, 8937, 9165, 12909, 14895, 15557, 16497, 19035, 21515, 26811, 27495, 38727, 44685, 46671, 49491, 64545, 77785, 82485, 116181, 134055, 140013, 193635, 202241, 233355, 247455, 348543, 420039, 580905, 606723, 700065, 1011205, 1260117, 1742715, 1820169, 2100195, 3033615, 5460507, 6300585, 9100845, 16381521, 27302535, 81907605]

約数ペア:

[(1, 81907605), (3, 27302535), (5, 16381521), (9, 9100845), (13, 6300585), (15, 5460507), (27, 3033615), (39, 2100195), (45, 1820169), (47, 1742715), (65, 1260117), (81, 1011205), (117, 700065), (135, 606723), (141, 580905), (195, 420039), (235, 348543), (331, 247455), (351, 233355), (405, 202241), (423, 193635), (585, 140013), (611, 134055), (705, 116181), (993, 82485), (1053, 77785), (1269, 64545), (1655, 49491), (1755, 46671), (1833, 44685), (2115, 38727), (2979, 27495), (3055, 26811), (3807, 21515), (4303, 19035), (4965, 16497), (5265, 15557), (5499, 14895), (6345, 12909), (8937, 9165)]