81857230

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3911}}^1$

素因数の和:3961

約数の個数: 64

約数和(自身を含む): 189278208

約数和(自身を除く): 107420978

約数列:

[1, 2, 5, 7, 10, 13, 14, 23, 26, 35, 46, 65, 70, 91, 115, 130, 161, 182, 230, 299, 322, 455, 598, 805, 910, 1495, 1610, 2093, 2990, 3911, 4186, 7822, 10465, 19555, 20930, 27377, 39110, 50843, 54754, 89953, 101686, 136885, 179906, 254215, 273770, 355901, 449765, 508430, 629671, 711802, 899530, 1169389, 1259342, 1779505, 2338778, 3148355, 3559010, 5846945, 6296710, 8185723, 11693890, 16371446, 40928615, 81857230]

約数ペア:

[(1, 81857230), (2, 40928615), (5, 16371446), (7, 11693890), (10, 8185723), (13, 6296710), (14, 5846945), (23, 3559010), (26, 3148355), (35, 2338778), (46, 1779505), (65, 1259342), (70, 1169389), (91, 899530), (115, 711802), (130, 629671), (161, 508430), (182, 449765), (230, 355901), (299, 273770), (322, 254215), (455, 179906), (598, 136885), (805, 101686), (910, 89953), (1495, 54754), (1610, 50843), (2093, 39110), (2990, 27377), (3911, 20930), (4186, 19555), (7822, 10465)]