78840220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1\times {\mathrm{503}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 176033088

約数和(自身を除く): 97192868

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 461, 503, 922, 1006, 1844, 2012, 2305, 2515, 4610, 5030, 7837, 8551, 9220, 10060, 15674, 17102, 31348, 34204, 39185, 42755, 78370, 85510, 156740, 171020, 231883, 463766, 927532, 1159415, 2318830, 3942011, 4637660, 7884022, 15768044, 19710055, 39420110, 78840220]

約数ペア:

[(1, 78840220), (2, 39420110), (4, 19710055), (5, 15768044), (10, 7884022), (17, 4637660), (20, 3942011), (34, 2318830), (68, 1159415), (85, 927532), (170, 463766), (340, 231883), (461, 171020), (503, 156740), (922, 85510), (1006, 78370), (1844, 42755), (2012, 39185), (2305, 34204), (2515, 31348), (4610, 17102), (5030, 15674), (7837, 10060), (8551, 9220)]