28019175

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 49758720

約数和(自身を除く): 21739545

約数列:

[1, 3, 5, 15, 23, 25, 37, 69, 75, 111, 115, 185, 345, 439, 555, 575, 851, 925, 1317, 1725, 2195, 2553, 2775, 4255, 6585, 10097, 10975, 12765, 16243, 21275, 30291, 32925, 48729, 50485, 63825, 81215, 151455, 243645, 252425, 373589, 406075, 757275, 1120767, 1218225, 1867945, 5603835, 9339725, 28019175]

約数ペア:

[(1, 28019175), (3, 9339725), (5, 5603835), (15, 1867945), (23, 1218225), (25, 1120767), (37, 757275), (69, 406075), (75, 373589), (111, 252425), (115, 243645), (185, 151455), (345, 81215), (439, 63825), (555, 50485), (575, 48729), (851, 32925), (925, 30291), (1317, 21275), (1725, 16243), (2195, 12765), (2553, 10975), (2775, 10097), (4255, 6585)]