81176020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{929}}^1$

素因数の和:1212

約数の個数: 48

約数和(自身を含む): 181394640

約数和(自身を除く): 100218620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 257, 340, 514, 929, 1028, 1285, 1858, 2570, 3716, 4369, 4645, 5140, 8738, 9290, 15793, 17476, 18580, 21845, 31586, 43690, 63172, 78965, 87380, 157930, 238753, 315860, 477506, 955012, 1193765, 2387530, 4058801, 4775060, 8117602, 16235204, 20294005, 40588010, 81176020]

約数ペア:

[(1, 81176020), (2, 40588010), (4, 20294005), (5, 16235204), (10, 8117602), (17, 4775060), (20, 4058801), (34, 2387530), (68, 1193765), (85, 955012), (170, 477506), (257, 315860), (340, 238753), (514, 157930), (929, 87380), (1028, 78965), (1285, 63172), (1858, 43690), (2570, 31586), (3716, 21845), (4369, 18580), (4645, 17476), (5140, 15793), (8738, 9290)]