28849940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{821}}^1$

素因数の和:1088

約数の個数: 48

約数和(自身を含む): 69600384

約数和(自身を除く): 40750444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 821, 1004, 1255, 1642, 1757, 2510, 3284, 3514, 4105, 5020, 5747, 7028, 8210, 8785, 11494, 16420, 17570, 22988, 28735, 35140, 57470, 114940, 206071, 412142, 824284, 1030355, 1442497, 2060710, 2884994, 4121420, 5769988, 7212485, 14424970, 28849940]

約数ペア:

[(1, 28849940), (2, 14424970), (4, 7212485), (5, 5769988), (7, 4121420), (10, 2884994), (14, 2060710), (20, 1442497), (28, 1030355), (35, 824284), (70, 412142), (140, 206071), (251, 114940), (502, 57470), (821, 35140), (1004, 28735), (1255, 22988), (1642, 17570), (1757, 16420), (2510, 11494), (3284, 8785), (3514, 8210), (4105, 7028), (5020, 5747)]