21637250

素因数分解:

$2^1\times 5^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 64

約数和(自身を含む): 43670016

約数和(自身を除く): 22032766

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 53, 71, 106, 115, 125, 142, 230, 250, 265, 355, 530, 575, 710, 1150, 1219, 1325, 1633, 1775, 2438, 2650, 2875, 3266, 3550, 3763, 5750, 6095, 6625, 7526, 8165, 8875, 12190, 13250, 16330, 17750, 18815, 30475, 37630, 40825, 60950, 81650, 86549, 94075, 152375, 173098, 188150, 204125, 304750, 408250, 432745, 470375, 865490, 940750, 2163725, 4327450, 10818625, 21637250]

約数ペア:

[(1, 21637250), (2, 10818625), (5, 4327450), (10, 2163725), (23, 940750), (25, 865490), (46, 470375), (50, 432745), (53, 408250), (71, 304750), (106, 204125), (115, 188150), (125, 173098), (142, 152375), (230, 94075), (250, 86549), (265, 81650), (355, 60950), (530, 40825), (575, 37630), (710, 30475), (1150, 18815), (1219, 17750), (1325, 16330), (1633, 13250), (1775, 12190), (2438, 8875), (2650, 8165), (2875, 7526), (3266, 6625), (3550, 6095), (3763, 5750)]