28007260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 61286400

約数和(自身を除く): 33279140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 199, 227, 310, 398, 454, 620, 796, 908, 995, 1135, 1990, 2270, 3980, 4540, 6169, 7037, 12338, 14074, 24676, 28148, 30845, 35185, 45173, 61690, 70370, 90346, 123380, 140740, 180692, 225865, 451730, 903460, 1400363, 2800726, 5601452, 7001815, 14003630, 28007260]

約数ペア:

[(1, 28007260), (2, 14003630), (4, 7001815), (5, 5601452), (10, 2800726), (20, 1400363), (31, 903460), (62, 451730), (124, 225865), (155, 180692), (199, 140740), (227, 123380), (310, 90346), (398, 70370), (454, 61690), (620, 45173), (796, 35185), (908, 30845), (995, 28148), (1135, 24676), (1990, 14074), (2270, 12338), (3980, 7037), (4540, 6169)]