21313250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1$

素因数の和:684

約数の個数: 64

約数和(自身を含む): 48072960

約数和(自身を除く): 26759710

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 50, 70, 95, 125, 133, 175, 190, 250, 266, 350, 475, 641, 665, 875, 950, 1282, 1330, 1750, 2375, 3205, 3325, 4487, 4750, 6410, 6650, 8974, 12179, 16025, 16625, 22435, 24358, 32050, 33250, 44870, 60895, 80125, 85253, 112175, 121790, 160250, 170506, 224350, 304475, 426265, 560875, 608950, 852530, 1121750, 1522375, 2131325, 3044750, 4262650, 10656625, 21313250]

約数ペア:

[(1, 21313250), (2, 10656625), (5, 4262650), (7, 3044750), (10, 2131325), (14, 1522375), (19, 1121750), (25, 852530), (35, 608950), (38, 560875), (50, 426265), (70, 304475), (95, 224350), (125, 170506), (133, 160250), (175, 121790), (190, 112175), (250, 85253), (266, 80125), (350, 60895), (475, 44870), (641, 33250), (665, 32050), (875, 24358), (950, 22435), (1282, 16625), (1330, 16025), (1750, 12179), (2375, 8974), (3205, 6650), (3325, 6410), (4487, 4750)]