21752625

素因数分解:

$3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:151

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 17784015

約数列:

[1, 3, 5, 15, 19, 25, 43, 57, 71, 75, 95, 125, 129, 213, 215, 285, 355, 375, 475, 645, 817, 1065, 1075, 1349, 1425, 1775, 2375, 2451, 3053, 3225, 4047, 4085, 5325, 5375, 6745, 7125, 8875, 9159, 12255, 15265, 16125, 20235, 20425, 26625, 33725, 45795, 58007, 61275, 76325, 101175, 102125, 168625, 174021, 228975, 290035, 306375, 381625, 505875, 870105, 1144875, 1450175, 4350525, 7250875, 21752625]

約数ペア:

[(1, 21752625), (3, 7250875), (5, 4350525), (15, 1450175), (19, 1144875), (25, 870105), (43, 505875), (57, 381625), (71, 306375), (75, 290035), (95, 228975), (125, 174021), (129, 168625), (213, 102125), (215, 101175), (285, 76325), (355, 61275), (375, 58007), (475, 45795), (645, 33725), (817, 26625), (1065, 20425), (1075, 20235), (1349, 16125), (1425, 15265), (1775, 12255), (2375, 9159), (2451, 8875), (3053, 7125), (3225, 6745), (4047, 5375), (4085, 5325)]