870817081720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1\times {\mathrm{31139}}^1$

素因数の和:31493

約数の個数: 128

約数和(自身を含む): 2042086464000

約数和(自身を除く): 1171269382280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 71, 86, 142, 172, 215, 229, 284, 344, 355, 430, 458, 568, 710, 860, 916, 1145, 1420, 1720, 1832, 2290, 2840, 3053, 4580, 6106, 9160, 9847, 12212, 15265, 16259, 19694, 24424, 30530, 31139, 32518, 39388, 49235, 61060, 62278, 65036, 78776, 81295, 98470, 122120, 124556, 130072, 155695, 162590, 196940, 249112, 311390, 325180, 393880, 622780, 650360, 699137, 1245560, 1338977, 1398274, 2210869, 2677954, 2796548, 3495685, 4421738, 5355908, 5593096, 6694885, 6991370, 7130831, 8843476, 10711816, 11054345, 13389770, 13982740, 14261662, 17686952, 22108690, 26779540, 27965480, 28523324, 35654155, 44217380, 53559080, 57046648, 71308310, 88434760, 95067367, 142616620, 190134734, 285233240, 306625733, 380269468, 475336835, 506289001, 613251466, 760538936, 950673670, 1012578002, 1226502932, 1533128665, 1901347340, 2025156004, 2453005864, 2531445005, 3066257330, 3802694680, 4050312008, 5062890010, 6132514660, 10125780020, 12265029320, 20251560040, 21770427043, 43540854086, 87081708172, 108852135215, 174163416344, 217704270430, 435408540860, 870817081720]

約数ペア:

[(1, 870817081720), (2, 435408540860), (4, 217704270430), (5, 174163416344), (8, 108852135215), (10, 87081708172), (20, 43540854086), (40, 21770427043), (43, 20251560040), (71, 12265029320), (86, 10125780020), (142, 6132514660), (172, 5062890010), (215, 4050312008), (229, 3802694680), (284, 3066257330), (344, 2531445005), (355, 2453005864), (430, 2025156004), (458, 1901347340), (568, 1533128665), (710, 1226502932), (860, 1012578002), (916, 950673670), (1145, 760538936), (1420, 613251466), (1720, 506289001), (1832, 475336835), (2290, 380269468), (2840, 306625733), (3053, 285233240), (4580, 190134734), (6106, 142616620), (9160, 95067367), (9847, 88434760), (12212, 71308310), (15265, 57046648), (16259, 53559080), (19694, 44217380), (24424, 35654155), (30530, 28523324), (31139, 27965480), (32518, 26779540), (39388, 22108690), (49235, 17686952), (61060, 14261662), (62278, 13982740), (65036, 13389770), (78776, 11054345), (81295, 10711816), (98470, 8843476), (122120, 7130831), (124556, 6991370), (130072, 6694885), (155695, 5593096), (162590, 5355908), (196940, 4421738), (249112, 3495685), (311390, 2796548), (325180, 2677954), (393880, 2210869), (622780, 1398274), (650360, 1338977), (699137, 1245560)]