21080484720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29278451}}^1$

素因数の和:29278470

約数の個数: 60

約数和(自身を含む): 70795296936

約数和(自身を除く): 49714812216

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29278451, 58556902, 87835353, 117113804, 146392255, 175670706, 234227608, 263506059, 292784510, 351341412, 439176765, 468455216, 527012118, 585569020, 702682824, 878353530, 1054024236, 1171138040, 1317530295, 1405365648, 1756707060, 2108048472, 2342276080, 2635060590, 3513414120, 4216096944, 5270121180, 7026828240, 10540242360, 21080484720]

約数ペア:

[(1, 21080484720), (2, 10540242360), (3, 7026828240), (4, 5270121180), (5, 4216096944), (6, 3513414120), (8, 2635060590), (9, 2342276080), (10, 2108048472), (12, 1756707060), (15, 1405365648), (16, 1317530295), (18, 1171138040), (20, 1054024236), (24, 878353530), (30, 702682824), (36, 585569020), (40, 527012118), (45, 468455216), (48, 439176765), (60, 351341412), (72, 292784510), (80, 263506059), (90, 234227608), (120, 175670706), (144, 146392255), (180, 117113804), (240, 87835353), (360, 58556902), (720, 29278451)]