20150740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 23596460

約数列:

[1, 2, 4, 5, 10, 20, 61, 83, 122, 166, 199, 244, 305, 332, 398, 415, 610, 796, 830, 995, 1220, 1660, 1990, 3980, 5063, 10126, 12139, 16517, 20252, 24278, 25315, 33034, 48556, 50630, 60695, 66068, 82585, 101260, 121390, 165170, 242780, 330340, 1007537, 2015074, 4030148, 5037685, 10075370, 20150740]

約数ペア:

[(1, 20150740), (2, 10075370), (4, 5037685), (5, 4030148), (10, 2015074), (20, 1007537), (61, 330340), (83, 242780), (122, 165170), (166, 121390), (199, 101260), (244, 82585), (305, 66068), (332, 60695), (398, 50630), (415, 48556), (610, 33034), (796, 25315), (830, 24278), (995, 20252), (1220, 16517), (1660, 12139), (1990, 10126), (3980, 5063)]