18375980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1103}}^1$

素因数の和:1143

約数の個数: 72

約数和(自身を含む): 47573568

約数和(自身を除く): 29197588

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1103, 1190, 1666, 2206, 2380, 3332, 4165, 4412, 5515, 7721, 8330, 11030, 15442, 16660, 18751, 22060, 30884, 37502, 38605, 54047, 75004, 77210, 93755, 108094, 131257, 154420, 187510, 216188, 262514, 270235, 375020, 525028, 540470, 656285, 918799, 1080940, 1312570, 1837598, 2625140, 3675196, 4593995, 9187990, 18375980]

約数ペア:

[(1, 18375980), (2, 9187990), (4, 4593995), (5, 3675196), (7, 2625140), (10, 1837598), (14, 1312570), (17, 1080940), (20, 918799), (28, 656285), (34, 540470), (35, 525028), (49, 375020), (68, 270235), (70, 262514), (85, 216188), (98, 187510), (119, 154420), (140, 131257), (170, 108094), (196, 93755), (238, 77210), (245, 75004), (340, 54047), (476, 38605), (490, 37502), (595, 30884), (833, 22060), (980, 18751), (1103, 16660), (1190, 15442), (1666, 11030), (2206, 8330), (2380, 7721), (3332, 5515), (4165, 4412)]