890243750

素因数分解:

$2^1\times 5^5\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{563}}^1$

素因数の和:624

約数の個数: 96

約数和(自身を含む): 1903378176

約数和(自身を除く): 1013134426

約数列:

[1, 2, 5, 10, 11, 22, 23, 25, 46, 50, 55, 110, 115, 125, 230, 250, 253, 275, 506, 550, 563, 575, 625, 1126, 1150, 1250, 1265, 1375, 2530, 2750, 2815, 2875, 3125, 5630, 5750, 6193, 6250, 6325, 6875, 12386, 12650, 12949, 13750, 14075, 14375, 25898, 28150, 28750, 30965, 31625, 34375, 61930, 63250, 64745, 68750, 70375, 71875, 129490, 140750, 142439, 143750, 154825, 158125, 284878, 309650, 316250, 323725, 351875, 647450, 703750, 712195, 774125, 790625, 1424390, 1548250, 1581250, 1618625, 1759375, 3237250, 3518750, 3560975, 3870625, 7121950, 7741250, 8093125, 16186250, 17804875, 19353125, 35609750, 38706250, 40465625, 80931250, 89024375, 178048750, 445121875, 890243750]

約数ペア:

[(1, 890243750), (2, 445121875), (5, 178048750), (10, 89024375), (11, 80931250), (22, 40465625), (23, 38706250), (25, 35609750), (46, 19353125), (50, 17804875), (55, 16186250), (110, 8093125), (115, 7741250), (125, 7121950), (230, 3870625), (250, 3560975), (253, 3518750), (275, 3237250), (506, 1759375), (550, 1618625), (563, 1581250), (575, 1548250), (625, 1424390), (1126, 790625), (1150, 774125), (1250, 712195), (1265, 703750), (1375, 647450), (2530, 351875), (2750, 323725), (2815, 316250), (2875, 309650), (3125, 284878), (5630, 158125), (5750, 154825), (6193, 143750), (6250, 142439), (6325, 140750), (6875, 129490), (12386, 71875), (12650, 70375), (12949, 68750), (13750, 64745), (14075, 63250), (14375, 61930), (25898, 34375), (28150, 31625), (28750, 30965)]