31680140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1458

約数の個数: 48

約数和(自身を含む): 70581504

約数和(自身を除く): 38901364

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 1147, 1381, 2294, 2762, 4588, 5524, 5735, 6905, 11470, 13810, 22940, 27620, 42811, 51097, 85622, 102194, 171244, 204388, 214055, 255485, 428110, 510970, 856220, 1021940, 1584007, 3168014, 6336028, 7920035, 15840070, 31680140]

約数ペア:

[(1, 31680140), (2, 15840070), (4, 7920035), (5, 6336028), (10, 3168014), (20, 1584007), (31, 1021940), (37, 856220), (62, 510970), (74, 428110), (124, 255485), (148, 214055), (155, 204388), (185, 171244), (310, 102194), (370, 85622), (620, 51097), (740, 42811), (1147, 27620), (1381, 22940), (2294, 13810), (2762, 11470), (4588, 6905), (5524, 5735)]