31019240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{797}}^1$

素因数の和:954

約数の個数: 64

約数和(自身を含む): 80438400

約数和(自身を除く): 49419160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 797, 973, 1112, 1390, 1594, 1946, 2780, 3188, 3892, 3985, 4865, 5560, 5579, 6376, 7784, 7970, 9730, 11158, 15940, 19460, 22316, 27895, 31880, 38920, 44632, 55790, 110783, 111580, 221566, 223160, 443132, 553915, 775481, 886264, 1107830, 1550962, 2215660, 3101924, 3877405, 4431320, 6203848, 7754810, 15509620, 31019240]

約数ペア:

[(1, 31019240), (2, 15509620), (4, 7754810), (5, 6203848), (7, 4431320), (8, 3877405), (10, 3101924), (14, 2215660), (20, 1550962), (28, 1107830), (35, 886264), (40, 775481), (56, 553915), (70, 443132), (139, 223160), (140, 221566), (278, 111580), (280, 110783), (556, 55790), (695, 44632), (797, 38920), (973, 31880), (1112, 27895), (1390, 22316), (1594, 19460), (1946, 15940), (2780, 11158), (3188, 9730), (3892, 7970), (3985, 7784), (4865, 6376), (5560, 5579)]