19207920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{491}}^1$

素因数の和:670

約数の個数: 80

約数和(自身を含む): 60031872

約数和(自身を除く): 40823952

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 491, 652, 815, 978, 982, 1304, 1473, 1630, 1956, 1964, 2445, 2455, 2608, 2946, 3260, 3912, 3928, 4890, 4910, 5892, 6520, 7365, 7824, 7856, 9780, 9820, 11784, 13040, 14730, 19560, 19640, 23568, 29460, 39120, 39280, 58920, 80033, 117840, 160066, 240099, 320132, 400165, 480198, 640264, 800330, 960396, 1200495, 1280528, 1600660, 1920792, 2400990, 3201320, 3841584, 4801980, 6402640, 9603960, 19207920]

約数ペア:

[(1, 19207920), (2, 9603960), (3, 6402640), (4, 4801980), (5, 3841584), (6, 3201320), (8, 2400990), (10, 1920792), (12, 1600660), (15, 1280528), (16, 1200495), (20, 960396), (24, 800330), (30, 640264), (40, 480198), (48, 400165), (60, 320132), (80, 240099), (120, 160066), (163, 117840), (240, 80033), (326, 58920), (489, 39280), (491, 39120), (652, 29460), (815, 23568), (978, 19640), (982, 19560), (1304, 14730), (1473, 13040), (1630, 11784), (1956, 9820), (1964, 9780), (2445, 7856), (2455, 7824), (2608, 7365), (2946, 6520), (3260, 5892), (3912, 4910), (3928, 4890)]