28707825

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 50086080

約数和(自身を除く): 21378255

約数列:

[1, 3, 5, 15, 25, 29, 67, 75, 87, 145, 197, 201, 335, 435, 591, 725, 985, 1005, 1675, 1943, 2175, 2955, 4925, 5025, 5713, 5829, 9715, 13199, 14775, 17139, 28565, 29145, 39597, 48575, 65995, 85695, 142825, 145725, 197985, 329975, 382771, 428475, 989925, 1148313, 1913855, 5741565, 9569275, 28707825]

約数ペア:

[(1, 28707825), (3, 9569275), (5, 5741565), (15, 1913855), (25, 1148313), (29, 989925), (67, 428475), (75, 382771), (87, 329975), (145, 197985), (197, 145725), (201, 142825), (335, 85695), (435, 65995), (591, 48575), (725, 39597), (985, 29145), (1005, 28565), (1675, 17139), (1943, 14775), (2175, 13199), (2955, 9715), (4925, 5829), (5025, 5713)]