19660875

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 36516480

約数和(自身を除く): 16855605

約数列:

[1, 3, 5, 13, 15, 25, 37, 39, 65, 75, 109, 111, 125, 185, 195, 325, 327, 375, 481, 545, 555, 925, 975, 1417, 1443, 1625, 1635, 2405, 2725, 2775, 4033, 4251, 4625, 4875, 7085, 7215, 8175, 12025, 12099, 13625, 13875, 20165, 21255, 35425, 36075, 40875, 52429, 60125, 60495, 100825, 106275, 157287, 177125, 180375, 262145, 302475, 504125, 531375, 786435, 1310725, 1512375, 3932175, 6553625, 19660875]

約数ペア:

[(1, 19660875), (3, 6553625), (5, 3932175), (13, 1512375), (15, 1310725), (25, 786435), (37, 531375), (39, 504125), (65, 302475), (75, 262145), (109, 180375), (111, 177125), (125, 157287), (185, 106275), (195, 100825), (325, 60495), (327, 60125), (375, 52429), (481, 40875), (545, 36075), (555, 35425), (925, 21255), (975, 20165), (1417, 13875), (1443, 13625), (1625, 12099), (1635, 12025), (2405, 8175), (2725, 7215), (2775, 7085), (4033, 4875), (4251, 4625)]