25416280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 59904000

約数和(自身を除く): 34487720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 103, 124, 155, 199, 206, 248, 310, 398, 412, 515, 620, 796, 824, 995, 1030, 1240, 1592, 1990, 2060, 3193, 3980, 4120, 6169, 6386, 7960, 12338, 12772, 15965, 20497, 24676, 25544, 30845, 31930, 40994, 49352, 61690, 63860, 81988, 102485, 123380, 127720, 163976, 204970, 246760, 409940, 635407, 819880, 1270814, 2541628, 3177035, 5083256, 6354070, 12708140, 25416280]

約数ペア:

[(1, 25416280), (2, 12708140), (4, 6354070), (5, 5083256), (8, 3177035), (10, 2541628), (20, 1270814), (31, 819880), (40, 635407), (62, 409940), (103, 246760), (124, 204970), (155, 163976), (199, 127720), (206, 123380), (248, 102485), (310, 81988), (398, 63860), (412, 61690), (515, 49352), (620, 40994), (796, 31930), (824, 30845), (995, 25544), (1030, 24676), (1240, 20497), (1592, 15965), (1990, 12772), (2060, 12338), (3193, 7960), (3980, 6386), (4120, 6169)]