80715880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 217728000

約数和(自身を除く): 137012120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 79, 82, 89, 140, 158, 164, 178, 205, 280, 287, 316, 328, 356, 395, 410, 445, 553, 574, 623, 632, 712, 790, 820, 890, 1106, 1148, 1246, 1435, 1580, 1640, 1780, 2212, 2296, 2492, 2765, 2870, 3115, 3160, 3239, 3560, 3649, 4424, 4984, 5530, 5740, 6230, 6478, 7031, 7298, 11060, 11480, 12460, 12956, 14062, 14596, 16195, 18245, 22120, 22673, 24920, 25543, 25912, 28124, 29192, 32390, 35155, 36490, 45346, 49217, 51086, 56248, 64780, 70310, 72980, 90692, 98434, 102172, 113365, 127715, 129560, 140620, 145960, 181384, 196868, 204344, 226730, 246085, 255430, 281240, 288271, 393736, 453460, 492170, 510860, 576542, 906920, 984340, 1021720, 1153084, 1441355, 1968680, 2017897, 2306168, 2882710, 4035794, 5765420, 8071588, 10089485, 11530840, 16143176, 20178970, 40357940, 80715880]

約数ペア:

[(1, 80715880), (2, 40357940), (4, 20178970), (5, 16143176), (7, 11530840), (8, 10089485), (10, 8071588), (14, 5765420), (20, 4035794), (28, 2882710), (35, 2306168), (40, 2017897), (41, 1968680), (56, 1441355), (70, 1153084), (79, 1021720), (82, 984340), (89, 906920), (140, 576542), (158, 510860), (164, 492170), (178, 453460), (205, 393736), (280, 288271), (287, 281240), (316, 255430), (328, 246085), (356, 226730), (395, 204344), (410, 196868), (445, 181384), (553, 145960), (574, 140620), (623, 129560), (632, 127715), (712, 113365), (790, 102172), (820, 98434), (890, 90692), (1106, 72980), (1148, 70310), (1246, 64780), (1435, 56248), (1580, 51086), (1640, 49217), (1780, 45346), (2212, 36490), (2296, 35155), (2492, 32390), (2765, 29192), (2870, 28124), (3115, 25912), (3160, 25543), (3239, 24920), (3560, 22673), (3649, 22120), (4424, 18245), (4984, 16195), (5530, 14596), (5740, 14062), (6230, 12956), (6478, 12460), (7031, 11480), (7298, 11060)]