21551790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{757}}^1$

素因数の和:853

約数の個数: 64

約数和(自身を含む): 56540736

約数和(自身を除く): 34988946

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 73, 78, 130, 146, 195, 219, 365, 390, 438, 730, 757, 949, 1095, 1514, 1898, 2190, 2271, 2847, 3785, 4542, 4745, 5694, 7570, 9490, 9841, 11355, 14235, 19682, 22710, 28470, 29523, 49205, 55261, 59046, 98410, 110522, 147615, 165783, 276305, 295230, 331566, 552610, 718393, 828915, 1436786, 1657830, 2155179, 3591965, 4310358, 7183930, 10775895, 21551790]

約数ペア:

[(1, 21551790), (2, 10775895), (3, 7183930), (5, 4310358), (6, 3591965), (10, 2155179), (13, 1657830), (15, 1436786), (26, 828915), (30, 718393), (39, 552610), (65, 331566), (73, 295230), (78, 276305), (130, 165783), (146, 147615), (195, 110522), (219, 98410), (365, 59046), (390, 55261), (438, 49205), (730, 29523), (757, 28470), (949, 22710), (1095, 19682), (1514, 14235), (1898, 11355), (2190, 9841), (2271, 9490), (2847, 7570), (3785, 5694), (4542, 4745)]