71253520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{523}}^1$

素因数の和:680

約数の個数: 80

約数和(自身を含む): 180113472

約数和(自身を除く): 108859952

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 131, 208, 260, 262, 520, 523, 524, 655, 1040, 1046, 1048, 1310, 1703, 2092, 2096, 2615, 2620, 3406, 4184, 5230, 5240, 6799, 6812, 8368, 8515, 10460, 10480, 13598, 13624, 17030, 20920, 27196, 27248, 33995, 34060, 41840, 54392, 67990, 68120, 68513, 108784, 135980, 136240, 137026, 271960, 274052, 342565, 543920, 548104, 685130, 890669, 1096208, 1370260, 1781338, 2740520, 3562676, 4453345, 5481040, 7125352, 8906690, 14250704, 17813380, 35626760, 71253520]

約数ペア:

[(1, 71253520), (2, 35626760), (4, 17813380), (5, 14250704), (8, 8906690), (10, 7125352), (13, 5481040), (16, 4453345), (20, 3562676), (26, 2740520), (40, 1781338), (52, 1370260), (65, 1096208), (80, 890669), (104, 685130), (130, 548104), (131, 543920), (208, 342565), (260, 274052), (262, 271960), (520, 137026), (523, 136240), (524, 135980), (655, 108784), (1040, 68513), (1046, 68120), (1048, 67990), (1310, 54392), (1703, 41840), (2092, 34060), (2096, 33995), (2615, 27248), (2620, 27196), (3406, 20920), (4184, 17030), (5230, 13624), (5240, 13598), (6799, 10480), (6812, 10460), (8368, 8515)]