81405870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29819}}^1$

素因数の和:29849

約数の個数: 64

約数和(自身を含む): 240468480

約数和(自身を除く): 159062610

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 29819, 59638, 89457, 149095, 178914, 208733, 298190, 387647, 417466, 447285, 626199, 775294, 894570, 1043665, 1162941, 1252398, 1938235, 2087330, 2325882, 2713529, 3130995, 3876470, 5427058, 5814705, 6261990, 8140587, 11629410, 13567645, 16281174, 27135290, 40702935, 81405870]

約数ペア:

[(1, 81405870), (2, 40702935), (3, 27135290), (5, 16281174), (6, 13567645), (7, 11629410), (10, 8140587), (13, 6261990), (14, 5814705), (15, 5427058), (21, 3876470), (26, 3130995), (30, 2713529), (35, 2325882), (39, 2087330), (42, 1938235), (65, 1252398), (70, 1162941), (78, 1043665), (91, 894570), (105, 775294), (130, 626199), (182, 447285), (195, 417466), (210, 387647), (273, 298190), (390, 208733), (455, 178914), (546, 149095), (910, 89457), (1365, 59638), (2730, 29819)]