21237250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 23241470

約数列:

[1, 2, 5, 10, 17, 19, 25, 34, 38, 50, 85, 95, 125, 170, 190, 250, 263, 323, 425, 475, 526, 646, 850, 950, 1315, 1615, 2125, 2375, 2630, 3230, 4250, 4471, 4750, 4997, 6575, 8075, 8942, 9994, 13150, 16150, 22355, 24985, 32875, 40375, 44710, 49970, 65750, 80750, 84949, 111775, 124925, 169898, 223550, 249850, 424745, 558875, 624625, 849490, 1117750, 1249250, 2123725, 4247450, 10618625, 21237250]

約数ペア:

[(1, 21237250), (2, 10618625), (5, 4247450), (10, 2123725), (17, 1249250), (19, 1117750), (25, 849490), (34, 624625), (38, 558875), (50, 424745), (85, 249850), (95, 223550), (125, 169898), (170, 124925), (190, 111775), (250, 84949), (263, 80750), (323, 65750), (425, 49970), (475, 44710), (526, 40375), (646, 32875), (850, 24985), (950, 22355), (1315, 16150), (1615, 13150), (2125, 9994), (2375, 8942), (2630, 8075), (3230, 6575), (4250, 4997), (4471, 4750)]