31515900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8081}}^1$

素因数の和:8111

約数の個数: 72

約数和(自身を含む): 98212464

約数和(自身を除く): 66696564

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 8081, 16162, 24243, 32324, 40405, 48486, 80810, 96972, 105053, 121215, 161620, 202025, 210106, 242430, 315159, 404050, 420212, 484860, 525265, 606075, 630318, 808100, 1050530, 1212150, 1260636, 1575795, 2101060, 2424300, 2626325, 3151590, 5252650, 6303180, 7878975, 10505300, 15757950, 31515900]

約数ペア:

[(1, 31515900), (2, 15757950), (3, 10505300), (4, 7878975), (5, 6303180), (6, 5252650), (10, 3151590), (12, 2626325), (13, 2424300), (15, 2101060), (20, 1575795), (25, 1260636), (26, 1212150), (30, 1050530), (39, 808100), (50, 630318), (52, 606075), (60, 525265), (65, 484860), (75, 420212), (78, 404050), (100, 315159), (130, 242430), (150, 210106), (156, 202025), (195, 161620), (260, 121215), (300, 105053), (325, 96972), (390, 80810), (650, 48486), (780, 40405), (975, 32324), (1300, 24243), (1950, 16162), (3900, 8081)]