31211820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{547}}^1$

素因数の和:879

約数の個数: 72

約数和(自身を含む): 95148144

約数和(自身を除く): 63936324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 547, 634, 951, 1094, 1268, 1585, 1641, 1902, 2188, 2735, 2853, 3170, 3282, 3804, 4755, 4923, 5470, 5706, 6340, 6564, 8205, 9510, 9846, 10940, 11412, 14265, 16410, 19020, 19692, 24615, 28530, 32820, 49230, 57060, 98460, 173399, 346798, 520197, 693596, 866995, 1040394, 1560591, 1733990, 2080788, 2600985, 3121182, 3467980, 5201970, 6242364, 7802955, 10403940, 15605910, 31211820]

約数ペア:

[(1, 31211820), (2, 15605910), (3, 10403940), (4, 7802955), (5, 6242364), (6, 5201970), (9, 3467980), (10, 3121182), (12, 2600985), (15, 2080788), (18, 1733990), (20, 1560591), (30, 1040394), (36, 866995), (45, 693596), (60, 520197), (90, 346798), (180, 173399), (317, 98460), (547, 57060), (634, 49230), (951, 32820), (1094, 28530), (1268, 24615), (1585, 19692), (1641, 19020), (1902, 16410), (2188, 14265), (2735, 11412), (2853, 10940), (3170, 9846), (3282, 9510), (3804, 8205), (4755, 6564), (4923, 6340), (5470, 5706)]