68781720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{81883}}^1$

素因数の和:81904

約数の個数: 64

約数和(自身を含む): 235825920

約数和(自身を除く): 167044200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 81883, 163766, 245649, 327532, 409415, 491298, 573181, 655064, 818830, 982596, 1146362, 1228245, 1637660, 1719543, 1965192, 2292724, 2456490, 2865905, 3275320, 3439086, 4585448, 4912980, 5731810, 6878172, 8597715, 9825960, 11463620, 13756344, 17195430, 22927240, 34390860, 68781720]

約数ペア:

[(1, 68781720), (2, 34390860), (3, 22927240), (4, 17195430), (5, 13756344), (6, 11463620), (7, 9825960), (8, 8597715), (10, 6878172), (12, 5731810), (14, 4912980), (15, 4585448), (20, 3439086), (21, 3275320), (24, 2865905), (28, 2456490), (30, 2292724), (35, 1965192), (40, 1719543), (42, 1637660), (56, 1228245), (60, 1146362), (70, 982596), (84, 818830), (105, 655064), (120, 573181), (140, 491298), (168, 409415), (210, 327532), (280, 245649), (420, 163766), (840, 81883)]