78870140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:495

約数の個数: 96

約数和(自身を含む): 191419200

約数和(自身を除く): 112549060

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 29, 34, 38, 58, 68, 76, 85, 95, 116, 145, 170, 190, 290, 323, 340, 380, 421, 493, 551, 580, 646, 842, 986, 1102, 1292, 1615, 1684, 1972, 2105, 2204, 2465, 2755, 3230, 4210, 4930, 5510, 6460, 7157, 7999, 8420, 9367, 9860, 11020, 12209, 14314, 15998, 18734, 24418, 28628, 31996, 35785, 37468, 39995, 46835, 48836, 61045, 71570, 79990, 93670, 122090, 135983, 143140, 159980, 187340, 207553, 231971, 244180, 271966, 415106, 463942, 543932, 679915, 830212, 927884, 1037765, 1159855, 1359830, 2075530, 2319710, 2719660, 3943507, 4151060, 4639420, 7887014, 15774028, 19717535, 39435070, 78870140]

約数ペア:

[(1, 78870140), (2, 39435070), (4, 19717535), (5, 15774028), (10, 7887014), (17, 4639420), (19, 4151060), (20, 3943507), (29, 2719660), (34, 2319710), (38, 2075530), (58, 1359830), (68, 1159855), (76, 1037765), (85, 927884), (95, 830212), (116, 679915), (145, 543932), (170, 463942), (190, 415106), (290, 271966), (323, 244180), (340, 231971), (380, 207553), (421, 187340), (493, 159980), (551, 143140), (580, 135983), (646, 122090), (842, 93670), (986, 79990), (1102, 71570), (1292, 61045), (1615, 48836), (1684, 46835), (1972, 39995), (2105, 37468), (2204, 35785), (2465, 31996), (2755, 28628), (3230, 24418), (4210, 18734), (4930, 15998), (5510, 14314), (6460, 12209), (7157, 11020), (7999, 9860), (8420, 9367)]