21888090

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:373

約数の個数: 128

約数和(自身を含む): 68728320

約数和(自身を除く): 46840230

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 37, 42, 45, 54, 63, 70, 74, 90, 105, 111, 126, 135, 185, 189, 210, 222, 259, 270, 313, 315, 333, 370, 378, 518, 555, 626, 630, 666, 777, 939, 945, 999, 1110, 1295, 1554, 1565, 1665, 1878, 1890, 1998, 2191, 2331, 2590, 2817, 3130, 3330, 3885, 4382, 4662, 4695, 4995, 5634, 6573, 6993, 7770, 8451, 9390, 9990, 10955, 11581, 11655, 13146, 13986, 14085, 16902, 19719, 21910, 23162, 23310, 28170, 32865, 34743, 34965, 39438, 42255, 57905, 59157, 65730, 69486, 69930, 81067, 84510, 98595, 104229, 115810, 118314, 162134, 173715, 197190, 208458, 243201, 295785, 312687, 347430, 405335, 486402, 521145, 591570, 625374, 729603, 810670, 1042290, 1216005, 1459206, 1563435, 2188809, 2432010, 3126870, 3648015, 4377618, 7296030, 10944045, 21888090]

約数ペア:

[(1, 21888090), (2, 10944045), (3, 7296030), (5, 4377618), (6, 3648015), (7, 3126870), (9, 2432010), (10, 2188809), (14, 1563435), (15, 1459206), (18, 1216005), (21, 1042290), (27, 810670), (30, 729603), (35, 625374), (37, 591570), (42, 521145), (45, 486402), (54, 405335), (63, 347430), (70, 312687), (74, 295785), (90, 243201), (105, 208458), (111, 197190), (126, 173715), (135, 162134), (185, 118314), (189, 115810), (210, 104229), (222, 98595), (259, 84510), (270, 81067), (313, 69930), (315, 69486), (333, 65730), (370, 59157), (378, 57905), (518, 42255), (555, 39438), (626, 34965), (630, 34743), (666, 32865), (777, 28170), (939, 23310), (945, 23162), (999, 21910), (1110, 19719), (1295, 16902), (1554, 14085), (1565, 13986), (1665, 13146), (1878, 11655), (1890, 11581), (1998, 10955), (2191, 9990), (2331, 9390), (2590, 8451), (2817, 7770), (3130, 6993), (3330, 6573), (3885, 5634), (4382, 4995), (4662, 4695)]