28712775

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{601}}^1$

素因数の和:641

約数の個数: 72

約数和(自身を含む): 59569104

約数和(自身を除く): 30856329

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 49, 65, 75, 91, 105, 147, 175, 195, 245, 273, 325, 455, 525, 601, 637, 735, 975, 1225, 1365, 1803, 1911, 2275, 3005, 3185, 3675, 4207, 6825, 7813, 9015, 9555, 12621, 15025, 15925, 21035, 23439, 29449, 39065, 45075, 47775, 54691, 63105, 88347, 105175, 117195, 147245, 164073, 195325, 273455, 315525, 382837, 441735, 585975, 736225, 820365, 1148511, 1367275, 1914185, 2208675, 4101825, 5742555, 9570925, 28712775]

約数ペア:

[(1, 28712775), (3, 9570925), (5, 5742555), (7, 4101825), (13, 2208675), (15, 1914185), (21, 1367275), (25, 1148511), (35, 820365), (39, 736225), (49, 585975), (65, 441735), (75, 382837), (91, 315525), (105, 273455), (147, 195325), (175, 164073), (195, 147245), (245, 117195), (273, 105175), (325, 88347), (455, 63105), (525, 54691), (601, 47775), (637, 45075), (735, 39065), (975, 29449), (1225, 23439), (1365, 21035), (1803, 15925), (1911, 15025), (2275, 12621), (3005, 9555), (3185, 9015), (3675, 7813), (4207, 6825)]