28518140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6571}}^1$

素因数の和:6618

約数の個数: 48

約数和(自身を含む): 70662144

約数和(自身を除く): 42144004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 6571, 13142, 26284, 32855, 45997, 65710, 91994, 131420, 183988, 203701, 229985, 407402, 459970, 814804, 919940, 1018505, 1425907, 2037010, 2851814, 4074020, 5703628, 7129535, 14259070, 28518140]

約数ペア:

[(1, 28518140), (2, 14259070), (4, 7129535), (5, 5703628), (7, 4074020), (10, 2851814), (14, 2037010), (20, 1425907), (28, 1018505), (31, 919940), (35, 814804), (62, 459970), (70, 407402), (124, 229985), (140, 203701), (155, 183988), (217, 131420), (310, 91994), (434, 65710), (620, 45997), (868, 32855), (1085, 26284), (2170, 13142), (4340, 6571)]