81966570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20543}}^1$

素因数の和:20579

約数の個数: 64

約数和(自身を含む): 236666880

約数和(自身を除く): 154700310

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990, 20543, 41086, 61629, 102715, 123258, 143801, 205430, 287602, 308145, 390317, 431403, 616290, 719005, 780634, 862806, 1170951, 1438010, 1951585, 2157015, 2341902, 2732219, 3903170, 4314030, 5464438, 5854755, 8196657, 11709510, 13661095, 16393314, 27322190, 40983285, 81966570]

約数ペア:

[(1, 81966570), (2, 40983285), (3, 27322190), (5, 16393314), (6, 13661095), (7, 11709510), (10, 8196657), (14, 5854755), (15, 5464438), (19, 4314030), (21, 3903170), (30, 2732219), (35, 2341902), (38, 2157015), (42, 1951585), (57, 1438010), (70, 1170951), (95, 862806), (105, 780634), (114, 719005), (133, 616290), (190, 431403), (210, 390317), (266, 308145), (285, 287602), (399, 205430), (570, 143801), (665, 123258), (798, 102715), (1330, 61629), (1995, 41086), (3990, 20543)]