21225375

素因数分解:

$3^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 41433600

約数和(自身を除く): 20208225

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 125, 135, 171, 225, 285, 331, 375, 475, 513, 675, 855, 993, 1125, 1425, 1655, 2375, 2565, 2979, 3375, 4275, 4965, 6289, 7125, 8275, 8937, 12825, 14895, 18867, 21375, 24825, 31445, 41375, 44685, 56601, 64125, 74475, 94335, 124125, 157225, 169803, 223425, 283005, 372375, 471675, 786125, 849015, 1117125, 1415025, 2358375, 4245075, 7075125, 21225375]

約数ペア:

[(1, 21225375), (3, 7075125), (5, 4245075), (9, 2358375), (15, 1415025), (19, 1117125), (25, 849015), (27, 786125), (45, 471675), (57, 372375), (75, 283005), (95, 223425), (125, 169803), (135, 157225), (171, 124125), (225, 94335), (285, 74475), (331, 64125), (375, 56601), (475, 44685), (513, 41375), (675, 31445), (855, 24825), (993, 21375), (1125, 18867), (1425, 14895), (1655, 12825), (2375, 8937), (2565, 8275), (2979, 7125), (3375, 6289), (4275, 4965)]