21189750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{1487}}^1$

素因数の和:1526

約数の個数: 64

約数和(自身を含む): 55710720

約数和(自身を除く): 34520970

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 25, 30, 38, 50, 57, 75, 95, 114, 125, 150, 190, 250, 285, 375, 475, 570, 750, 950, 1425, 1487, 2375, 2850, 2974, 4461, 4750, 7125, 7435, 8922, 14250, 14870, 22305, 28253, 37175, 44610, 56506, 74350, 84759, 111525, 141265, 169518, 185875, 223050, 282530, 371750, 423795, 557625, 706325, 847590, 1115250, 1412650, 2118975, 3531625, 4237950, 7063250, 10594875, 21189750]

約数ペア:

[(1, 21189750), (2, 10594875), (3, 7063250), (5, 4237950), (6, 3531625), (10, 2118975), (15, 1412650), (19, 1115250), (25, 847590), (30, 706325), (38, 557625), (50, 423795), (57, 371750), (75, 282530), (95, 223050), (114, 185875), (125, 169518), (150, 141265), (190, 111525), (250, 84759), (285, 74350), (375, 56506), (475, 44610), (570, 37175), (750, 28253), (950, 22305), (1425, 14870), (1487, 14250), (2375, 8922), (2850, 7435), (2974, 7125), (4461, 4750)]