28628740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 70785792

約数和(自身を除く): 42157052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 131, 140, 196, 223, 245, 262, 446, 490, 524, 655, 892, 917, 980, 1115, 1310, 1561, 1834, 2230, 2620, 3122, 3668, 4460, 4585, 6244, 6419, 7805, 9170, 10927, 12838, 15610, 18340, 21854, 25676, 29213, 31220, 32095, 43708, 54635, 58426, 64190, 109270, 116852, 128380, 146065, 204491, 218540, 292130, 408982, 584260, 817964, 1022455, 1431437, 2044910, 2862874, 4089820, 5725748, 7157185, 14314370, 28628740]

約数ペア:

[(1, 28628740), (2, 14314370), (4, 7157185), (5, 5725748), (7, 4089820), (10, 2862874), (14, 2044910), (20, 1431437), (28, 1022455), (35, 817964), (49, 584260), (70, 408982), (98, 292130), (131, 218540), (140, 204491), (196, 146065), (223, 128380), (245, 116852), (262, 109270), (446, 64190), (490, 58426), (524, 54635), (655, 43708), (892, 32095), (917, 31220), (980, 29213), (1115, 25676), (1310, 21854), (1561, 18340), (1834, 15610), (2230, 12838), (2620, 10927), (3122, 9170), (3668, 7805), (4460, 6419), (4585, 6244)]