320207680

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:265

約数の個数: 168

約数和(自身を含む): 856756224

約数和(自身を除く): 536548544

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 169, 191, 208, 248, 260, 310, 320, 338, 382, 403, 416, 496, 520, 620, 676, 764, 806, 832, 845, 955, 992, 1040, 1240, 1352, 1528, 1612, 1690, 1910, 1984, 2015, 2080, 2480, 2483, 2704, 3056, 3224, 3380, 3820, 4030, 4160, 4960, 4966, 5239, 5408, 5921, 6112, 6448, 6760, 7640, 8060, 9920, 9932, 10478, 10816, 11842, 12224, 12415, 12896, 13520, 15280, 16120, 19864, 20956, 23684, 24830, 25792, 26195, 27040, 29605, 30560, 32240, 32279, 39728, 41912, 47368, 49660, 52390, 54080, 59210, 61120, 64480, 64558, 76973, 79456, 83824, 94736, 99320, 104780, 118420, 128960, 129116, 153946, 158912, 161395, 167648, 189472, 198640, 209560, 236840, 258232, 307892, 322790, 335296, 378944, 384865, 397280, 419120, 473680, 516464, 615784, 645580, 769730, 794560, 838240, 947360, 1000649, 1032928, 1231568, 1291160, 1539460, 1676480, 1894720, 2001298, 2065856, 2463136, 2582320, 3078920, 4002596, 4926272, 5003245, 5164640, 6157840, 8005192, 10006490, 10329280, 12315680, 16010384, 20012980, 24631360, 32020768, 40025960, 64041536, 80051920, 160103840, 320207680]

約数ペア:

[(1, 320207680), (2, 160103840), (4, 80051920), (5, 64041536), (8, 40025960), (10, 32020768), (13, 24631360), (16, 20012980), (20, 16010384), (26, 12315680), (31, 10329280), (32, 10006490), (40, 8005192), (52, 6157840), (62, 5164640), (64, 5003245), (65, 4926272), (80, 4002596), (104, 3078920), (124, 2582320), (130, 2463136), (155, 2065856), (160, 2001298), (169, 1894720), (191, 1676480), (208, 1539460), (248, 1291160), (260, 1231568), (310, 1032928), (320, 1000649), (338, 947360), (382, 838240), (403, 794560), (416, 769730), (496, 645580), (520, 615784), (620, 516464), (676, 473680), (764, 419120), (806, 397280), (832, 384865), (845, 378944), (955, 335296), (992, 322790), (1040, 307892), (1240, 258232), (1352, 236840), (1528, 209560), (1612, 198640), (1690, 189472), (1910, 167648), (1984, 161395), (2015, 158912), (2080, 153946), (2480, 129116), (2483, 128960), (2704, 118420), (3056, 104780), (3224, 99320), (3380, 94736), (3820, 83824), (4030, 79456), (4160, 76973), (4960, 64558), (4966, 64480), (5239, 61120), (5408, 59210), (5921, 54080), (6112, 52390), (6448, 49660), (6760, 47368), (7640, 41912), (8060, 39728), (9920, 32279), (9932, 32240), (10478, 30560), (10816, 29605), (11842, 27040), (12224, 26195), (12415, 25792), (12896, 24830), (13520, 23684), (15280, 20956), (16120, 19864)]