21755490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 54604800

約数和(自身を除く): 32849310

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 149, 155, 157, 186, 298, 310, 314, 447, 465, 471, 745, 785, 894, 930, 942, 1490, 1570, 2235, 2355, 4470, 4619, 4710, 4867, 9238, 9734, 13857, 14601, 23095, 23393, 24335, 27714, 29202, 46190, 46786, 48670, 69285, 70179, 73005, 116965, 138570, 140358, 146010, 233930, 350895, 701790, 725183, 1450366, 2175549, 3625915, 4351098, 7251830, 10877745, 21755490]

約数ペア:

[(1, 21755490), (2, 10877745), (3, 7251830), (5, 4351098), (6, 3625915), (10, 2175549), (15, 1450366), (30, 725183), (31, 701790), (62, 350895), (93, 233930), (149, 146010), (155, 140358), (157, 138570), (186, 116965), (298, 73005), (310, 70179), (314, 69285), (447, 48670), (465, 46786), (471, 46190), (745, 29202), (785, 27714), (894, 24335), (930, 23393), (942, 23095), (1490, 14601), (1570, 13857), (2235, 9734), (2355, 9238), (4470, 4867), (4619, 4710)]