39620480

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1997}}^1$

素因数の和:2047

約数の個数: 64

約数和(自身を含む): 97822080

約数和(自身を除く): 58201600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 1997, 2480, 3968, 3994, 4960, 7988, 9920, 9985, 15976, 19840, 19970, 31952, 39940, 61907, 63904, 79880, 123814, 127808, 159760, 247628, 255616, 309535, 319520, 495256, 619070, 639040, 990512, 1238140, 1278080, 1981024, 2476280, 3962048, 4952560, 7924096, 9905120, 19810240, 39620480]

約数ペア:

[(1, 39620480), (2, 19810240), (4, 9905120), (5, 7924096), (8, 4952560), (10, 3962048), (16, 2476280), (20, 1981024), (31, 1278080), (32, 1238140), (40, 990512), (62, 639040), (64, 619070), (80, 495256), (124, 319520), (128, 309535), (155, 255616), (160, 247628), (248, 159760), (310, 127808), (320, 123814), (496, 79880), (620, 63904), (640, 61907), (992, 39940), (1240, 31952), (1984, 19970), (1997, 19840), (2480, 15976), (3968, 9985), (3994, 9920), (4960, 7988)]