18366975820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{659}}^1\times {\mathrm{829}}^1$

素因数の和:1579

約数の個数: 72

約数和(自身を含む): 39642094800

約数和(自身を除く): 21275118980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 659, 820, 829, 1318, 1658, 1681, 2636, 3295, 3316, 3362, 4145, 6590, 6724, 8290, 8405, 13180, 16580, 16810, 27019, 33620, 33989, 54038, 67978, 108076, 135095, 135956, 169945, 270190, 339890, 540380, 546311, 679780, 1092622, 1107779, 1393549, 2185244, 2215558, 2731555, 2787098, 4431116, 5463110, 5538895, 5574196, 6967745, 10926220, 11077790, 13935490, 22155580, 22398751, 27870980, 44797502, 89595004, 111993755, 223987510, 447975020, 918348791, 1836697582, 3673395164, 4591743955, 9183487910, 18366975820]

約数ペア:

[(1, 18366975820), (2, 9183487910), (4, 4591743955), (5, 3673395164), (10, 1836697582), (20, 918348791), (41, 447975020), (82, 223987510), (164, 111993755), (205, 89595004), (410, 44797502), (659, 27870980), (820, 22398751), (829, 22155580), (1318, 13935490), (1658, 11077790), (1681, 10926220), (2636, 6967745), (3295, 5574196), (3316, 5538895), (3362, 5463110), (4145, 4431116), (6590, 2787098), (6724, 2731555), (8290, 2215558), (8405, 2185244), (13180, 1393549), (16580, 1107779), (16810, 1092622), (27019, 679780), (33620, 546311), (33989, 540380), (54038, 339890), (67978, 270190), (108076, 169945), (135095, 135956)]