21793485

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 41040000

約数和(自身を除く): 19246515

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 149, 199, 245, 447, 597, 735, 745, 995, 1043, 1393, 2235, 2985, 3129, 4179, 5215, 6965, 7301, 9751, 15645, 20895, 21903, 29253, 29651, 36505, 48755, 88953, 109515, 146265, 148255, 207557, 444765, 622671, 1037785, 1452899, 3113355, 4358697, 7264495, 21793485]

約数ペア:

[(1, 21793485), (3, 7264495), (5, 4358697), (7, 3113355), (15, 1452899), (21, 1037785), (35, 622671), (49, 444765), (105, 207557), (147, 148255), (149, 146265), (199, 109515), (245, 88953), (447, 48755), (597, 36505), (735, 29651), (745, 29253), (995, 21903), (1043, 20895), (1393, 15645), (2235, 9751), (2985, 7301), (3129, 6965), (4179, 5215)]