81528790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:757

約数の個数: 64

約数和(自身を含む): 177500160

約数和(自身を除く): 95971370

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 79, 115, 158, 161, 230, 322, 395, 553, 641, 790, 805, 1106, 1282, 1610, 1817, 2765, 3205, 3634, 4487, 5530, 6410, 8974, 9085, 12719, 14743, 18170, 22435, 25438, 29486, 44870, 50639, 63595, 73715, 101278, 103201, 127190, 147430, 206402, 253195, 354473, 506390, 516005, 708946, 1032010, 1164697, 1772365, 2329394, 3544730, 5823485, 8152879, 11646970, 16305758, 40764395, 81528790]

約数ペア:

[(1, 81528790), (2, 40764395), (5, 16305758), (7, 11646970), (10, 8152879), (14, 5823485), (23, 3544730), (35, 2329394), (46, 1772365), (70, 1164697), (79, 1032010), (115, 708946), (158, 516005), (161, 506390), (230, 354473), (322, 253195), (395, 206402), (553, 147430), (641, 127190), (790, 103201), (805, 101278), (1106, 73715), (1282, 63595), (1610, 50639), (1817, 44870), (2765, 29486), (3205, 25438), (3634, 22435), (4487, 18170), (5530, 14743), (6410, 12719), (8974, 9085)]