21960675

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{467}}^1$

素因数の和:513

約数の個数: 72

約数和(自身を含む): 45264960

約数和(自身を除く): 23304285

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 33, 45, 55, 57, 75, 95, 99, 165, 171, 209, 225, 275, 285, 467, 475, 495, 627, 825, 855, 1045, 1401, 1425, 1881, 2335, 2475, 3135, 4203, 4275, 5137, 5225, 7005, 8873, 9405, 11675, 15411, 15675, 21015, 25685, 26619, 35025, 44365, 46233, 47025, 77055, 79857, 97603, 105075, 128425, 133095, 221825, 231165, 292809, 385275, 399285, 488015, 665475, 878427, 1155825, 1464045, 1996425, 2440075, 4392135, 7320225, 21960675]

約数ペア:

[(1, 21960675), (3, 7320225), (5, 4392135), (9, 2440075), (11, 1996425), (15, 1464045), (19, 1155825), (25, 878427), (33, 665475), (45, 488015), (55, 399285), (57, 385275), (75, 292809), (95, 231165), (99, 221825), (165, 133095), (171, 128425), (209, 105075), (225, 97603), (275, 79857), (285, 77055), (467, 47025), (475, 46233), (495, 44365), (627, 35025), (825, 26619), (855, 25685), (1045, 21015), (1401, 15675), (1425, 15411), (1881, 11675), (2335, 9405), (2475, 8873), (3135, 7005), (4203, 5225), (4275, 5137)]