21075900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{431}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 61496064

約数和(自身を除く): 40420164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 163, 300, 326, 431, 489, 652, 815, 862, 978, 1293, 1630, 1724, 1956, 2155, 2445, 2586, 3260, 4075, 4310, 4890, 5172, 6465, 8150, 8620, 9780, 10775, 12225, 12930, 16300, 21550, 24450, 25860, 32325, 43100, 48900, 64650, 70253, 129300, 140506, 210759, 281012, 351265, 421518, 702530, 843036, 1053795, 1405060, 1756325, 2107590, 3512650, 4215180, 5268975, 7025300, 10537950, 21075900]

約数ペア:

[(1, 21075900), (2, 10537950), (3, 7025300), (4, 5268975), (5, 4215180), (6, 3512650), (10, 2107590), (12, 1756325), (15, 1405060), (20, 1053795), (25, 843036), (30, 702530), (50, 421518), (60, 351265), (75, 281012), (100, 210759), (150, 140506), (163, 129300), (300, 70253), (326, 64650), (431, 48900), (489, 43100), (652, 32325), (815, 25860), (862, 24450), (978, 21550), (1293, 16300), (1630, 12930), (1724, 12225), (1956, 10775), (2155, 9780), (2445, 8620), (2586, 8150), (3260, 6465), (4075, 5172), (4310, 4890)]