21487550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{29}}^2\times {\mathrm{73}}^1$

素因数の和:150

約数の個数: 72

約数和(自身を含む): 47953776

約数和(自身を除く): 26466226

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 35, 50, 58, 70, 73, 145, 146, 175, 203, 290, 350, 365, 406, 511, 725, 730, 841, 1015, 1022, 1450, 1682, 1825, 2030, 2117, 2555, 3650, 4205, 4234, 5075, 5110, 5887, 8410, 10150, 10585, 11774, 12775, 14819, 21025, 21170, 25550, 29435, 29638, 42050, 52925, 58870, 61393, 74095, 105850, 122786, 147175, 148190, 294350, 306965, 370475, 429751, 613930, 740950, 859502, 1534825, 2148755, 3069650, 4297510, 10743775, 21487550]

約数ペア:

[(1, 21487550), (2, 10743775), (5, 4297510), (7, 3069650), (10, 2148755), (14, 1534825), (25, 859502), (29, 740950), (35, 613930), (50, 429751), (58, 370475), (70, 306965), (73, 294350), (145, 148190), (146, 147175), (175, 122786), (203, 105850), (290, 74095), (350, 61393), (365, 58870), (406, 52925), (511, 42050), (725, 29638), (730, 29435), (841, 25550), (1015, 21170), (1022, 21025), (1450, 14819), (1682, 12775), (1825, 11774), (2030, 10585), (2117, 10150), (2555, 8410), (3650, 5887), (4205, 5110), (4234, 5075)]