31305890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{373}}^1$

素因数の和:507

約数の個数: 64

約数和(自身を含む): 71089920

約数和(自身を除く): 39784030

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 109, 110, 154, 218, 373, 385, 545, 746, 763, 770, 1090, 1199, 1526, 1865, 2398, 2611, 3730, 3815, 4103, 5222, 5995, 7630, 8206, 8393, 11990, 13055, 16786, 20515, 26110, 28721, 40657, 41030, 41965, 57442, 81314, 83930, 143605, 203285, 284599, 287210, 406570, 447227, 569198, 894454, 1422995, 2236135, 2845990, 3130589, 4472270, 6261178, 15652945, 31305890]

約数ペア:

[(1, 31305890), (2, 15652945), (5, 6261178), (7, 4472270), (10, 3130589), (11, 2845990), (14, 2236135), (22, 1422995), (35, 894454), (55, 569198), (70, 447227), (77, 406570), (109, 287210), (110, 284599), (154, 203285), (218, 143605), (373, 83930), (385, 81314), (545, 57442), (746, 41965), (763, 41030), (770, 40657), (1090, 28721), (1199, 26110), (1526, 20515), (1865, 16786), (2398, 13055), (2611, 11990), (3730, 8393), (3815, 8206), (4103, 7630), (5222, 5995)]