211720990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{85717}}^1$

素因数の和:85756

約数の個数: 32

約数和(自身を含む): 432018720

約数和(自身を除く): 220297730

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 85717, 171434, 428585, 857170, 1114321, 1628623, 2228642, 3257246, 5571605, 8143115, 11143210, 16286230, 21172099, 42344198, 105860495, 211720990]

約数ペア:

[(1, 211720990), (2, 105860495), (5, 42344198), (10, 21172099), (13, 16286230), (19, 11143210), (26, 8143115), (38, 5571605), (65, 3257246), (95, 2228642), (130, 1628623), (190, 1114321), (247, 857170), (494, 428585), (1235, 171434), (2470, 85717)]