81535160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3989}}^1$

素因数の和:4080

約数の個数: 64

約数和(自身を含む): 212587200

約数和(自身を除く): 131052040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 3989, 4088, 5110, 7978, 10220, 15956, 19945, 20440, 27923, 31912, 39890, 55846, 79780, 111692, 139615, 159560, 223384, 279230, 291197, 558460, 582394, 1116920, 1164788, 1455985, 2038379, 2329576, 2911970, 4076758, 5823940, 8153516, 10191895, 11647880, 16307032, 20383790, 40767580, 81535160]

約数ペア:

[(1, 81535160), (2, 40767580), (4, 20383790), (5, 16307032), (7, 11647880), (8, 10191895), (10, 8153516), (14, 5823940), (20, 4076758), (28, 2911970), (35, 2329576), (40, 2038379), (56, 1455985), (70, 1164788), (73, 1116920), (140, 582394), (146, 558460), (280, 291197), (292, 279230), (365, 223384), (511, 159560), (584, 139615), (730, 111692), (1022, 79780), (1460, 55846), (2044, 39890), (2555, 31912), (2920, 27923), (3989, 20440), (4088, 19945), (5110, 15956), (7978, 10220)]