19577120

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3947}}^1$

素因数の和:3993

約数の個数: 48

約数和(自身を含む): 47755008

約数和(自身を除く): 28177888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 3947, 4960, 7894, 15788, 19735, 31576, 39470, 63152, 78940, 122357, 126304, 157880, 244714, 315760, 489428, 611785, 631520, 978856, 1223570, 1957712, 2447140, 3915424, 4894280, 9788560, 19577120]

約数ペア:

[(1, 19577120), (2, 9788560), (4, 4894280), (5, 3915424), (8, 2447140), (10, 1957712), (16, 1223570), (20, 978856), (31, 631520), (32, 611785), (40, 489428), (62, 315760), (80, 244714), (124, 157880), (155, 126304), (160, 122357), (248, 78940), (310, 63152), (496, 39470), (620, 31576), (992, 19735), (1240, 15788), (2480, 7894), (3947, 4960)]