80740120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 207360000

約数和(自身を除く): 126619880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 31, 38, 40, 46, 62, 76, 92, 95, 115, 124, 149, 152, 155, 184, 190, 230, 248, 298, 310, 380, 437, 460, 589, 596, 620, 713, 745, 760, 874, 920, 1178, 1192, 1240, 1426, 1490, 1748, 2185, 2356, 2831, 2852, 2945, 2980, 3427, 3496, 3565, 4370, 4619, 4712, 5662, 5704, 5890, 5960, 6854, 7130, 8740, 9238, 11324, 11780, 13547, 13708, 14155, 14260, 17135, 17480, 18476, 22648, 23095, 23560, 27094, 27416, 28310, 28520, 34270, 36952, 46190, 54188, 56620, 65113, 67735, 68540, 87761, 92380, 106237, 108376, 113240, 130226, 135470, 137080, 175522, 184760, 212474, 260452, 270940, 325565, 351044, 424948, 438805, 520904, 531185, 541880, 651130, 702088, 849896, 877610, 1062370, 1302260, 1755220, 2018503, 2124740, 2604520, 3510440, 4037006, 4249480, 8074012, 10092515, 16148024, 20185030, 40370060, 80740120]

約数ペア:

[(1, 80740120), (2, 40370060), (4, 20185030), (5, 16148024), (8, 10092515), (10, 8074012), (19, 4249480), (20, 4037006), (23, 3510440), (31, 2604520), (38, 2124740), (40, 2018503), (46, 1755220), (62, 1302260), (76, 1062370), (92, 877610), (95, 849896), (115, 702088), (124, 651130), (149, 541880), (152, 531185), (155, 520904), (184, 438805), (190, 424948), (230, 351044), (248, 325565), (298, 270940), (310, 260452), (380, 212474), (437, 184760), (460, 175522), (589, 137080), (596, 135470), (620, 130226), (713, 113240), (745, 108376), (760, 106237), (874, 92380), (920, 87761), (1178, 68540), (1192, 67735), (1240, 65113), (1426, 56620), (1490, 54188), (1748, 46190), (2185, 36952), (2356, 34270), (2831, 28520), (2852, 28310), (2945, 27416), (2980, 27094), (3427, 23560), (3496, 23095), (3565, 22648), (4370, 18476), (4619, 17480), (4712, 17135), (5662, 14260), (5704, 14155), (5890, 13708), (5960, 13547), (6854, 11780), (7130, 11324), (8740, 9238)]