81399990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{887}}^1$

素因数の和:946

約数の個数: 128

約数和(自身を含む): 245514240

約数和(自身を除く): 164114250

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 23, 30, 35, 38, 42, 46, 57, 69, 70, 95, 105, 114, 115, 133, 138, 161, 190, 210, 230, 266, 285, 322, 345, 399, 437, 483, 570, 665, 690, 798, 805, 874, 887, 966, 1311, 1330, 1610, 1774, 1995, 2185, 2415, 2622, 2661, 3059, 3990, 4370, 4435, 4830, 5322, 6118, 6209, 6555, 8870, 9177, 12418, 13110, 13305, 15295, 16853, 18354, 18627, 20401, 26610, 30590, 31045, 33706, 37254, 40802, 45885, 50559, 61203, 62090, 84265, 91770, 93135, 101118, 102005, 117971, 122406, 142807, 168530, 186270, 204010, 235942, 252795, 285614, 306015, 353913, 387619, 428421, 505590, 589855, 612030, 707826, 714035, 775238, 856842, 1162857, 1179710, 1428070, 1769565, 1938095, 2142105, 2325714, 2713333, 3539130, 3876190, 4284210, 5426666, 5814285, 8139999, 11628570, 13566665, 16279998, 27133330, 40699995, 81399990]

約数ペア:

[(1, 81399990), (2, 40699995), (3, 27133330), (5, 16279998), (6, 13566665), (7, 11628570), (10, 8139999), (14, 5814285), (15, 5426666), (19, 4284210), (21, 3876190), (23, 3539130), (30, 2713333), (35, 2325714), (38, 2142105), (42, 1938095), (46, 1769565), (57, 1428070), (69, 1179710), (70, 1162857), (95, 856842), (105, 775238), (114, 714035), (115, 707826), (133, 612030), (138, 589855), (161, 505590), (190, 428421), (210, 387619), (230, 353913), (266, 306015), (285, 285614), (322, 252795), (345, 235942), (399, 204010), (437, 186270), (483, 168530), (570, 142807), (665, 122406), (690, 117971), (798, 102005), (805, 101118), (874, 93135), (887, 91770), (966, 84265), (1311, 62090), (1330, 61203), (1610, 50559), (1774, 45885), (1995, 40802), (2185, 37254), (2415, 33706), (2622, 31045), (2661, 30590), (3059, 26610), (3990, 20401), (4370, 18627), (4435, 18354), (4830, 16853), (5322, 15295), (6118, 13305), (6209, 13110), (6555, 12418), (8870, 9177)]