81938220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:424

約数の個数: 192

約数和(自身を含む): 289766400

約数和(自身を除く): 207828180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 43, 52, 60, 65, 70, 78, 84, 86, 91, 105, 129, 130, 140, 156, 172, 182, 195, 210, 215, 258, 260, 273, 301, 349, 364, 390, 420, 430, 455, 516, 546, 559, 602, 645, 698, 780, 860, 903, 910, 1047, 1092, 1118, 1204, 1290, 1365, 1396, 1505, 1677, 1745, 1806, 1820, 2094, 2236, 2443, 2580, 2730, 2795, 3010, 3354, 3490, 3612, 3913, 4188, 4515, 4537, 4886, 5235, 5460, 5590, 6020, 6708, 6980, 7329, 7826, 8385, 9030, 9074, 9772, 10470, 11180, 11739, 12215, 13611, 14658, 15007, 15652, 16770, 18060, 18148, 19565, 20940, 22685, 23478, 24430, 27222, 29316, 30014, 31759, 33540, 36645, 39130, 45021, 45370, 46956, 48860, 54444, 58695, 60028, 63518, 68055, 73290, 75035, 78260, 90042, 90740, 95277, 105049, 117390, 127036, 136110, 146580, 150070, 158795, 180084, 190554, 195091, 210098, 225105, 234780, 272220, 300140, 315147, 317590, 381108, 390182, 420196, 450210, 476385, 525245, 585273, 630294, 635180, 780364, 900420, 952770, 975455, 1050490, 1170546, 1260588, 1365637, 1575735, 1905540, 1950910, 2100980, 2341092, 2731274, 2926365, 3151470, 3901820, 4096911, 5462548, 5852730, 6302940, 6828185, 8193822, 11705460, 13656370, 16387644, 20484555, 27312740, 40969110, 81938220]

約数ペア:

[(1, 81938220), (2, 40969110), (3, 27312740), (4, 20484555), (5, 16387644), (6, 13656370), (7, 11705460), (10, 8193822), (12, 6828185), (13, 6302940), (14, 5852730), (15, 5462548), (20, 4096911), (21, 3901820), (26, 3151470), (28, 2926365), (30, 2731274), (35, 2341092), (39, 2100980), (42, 1950910), (43, 1905540), (52, 1575735), (60, 1365637), (65, 1260588), (70, 1170546), (78, 1050490), (84, 975455), (86, 952770), (91, 900420), (105, 780364), (129, 635180), (130, 630294), (140, 585273), (156, 525245), (172, 476385), (182, 450210), (195, 420196), (210, 390182), (215, 381108), (258, 317590), (260, 315147), (273, 300140), (301, 272220), (349, 234780), (364, 225105), (390, 210098), (420, 195091), (430, 190554), (455, 180084), (516, 158795), (546, 150070), (559, 146580), (602, 136110), (645, 127036), (698, 117390), (780, 105049), (860, 95277), (903, 90740), (910, 90042), (1047, 78260), (1092, 75035), (1118, 73290), (1204, 68055), (1290, 63518), (1365, 60028), (1396, 58695), (1505, 54444), (1677, 48860), (1745, 46956), (1806, 45370), (1820, 45021), (2094, 39130), (2236, 36645), (2443, 33540), (2580, 31759), (2730, 30014), (2795, 29316), (3010, 27222), (3354, 24430), (3490, 23478), (3612, 22685), (3913, 20940), (4188, 19565), (4515, 18148), (4537, 18060), (4886, 16770), (5235, 15652), (5460, 15007), (5590, 14658), (6020, 13611), (6708, 12215), (6980, 11739), (7329, 11180), (7826, 10470), (8385, 9772), (9030, 9074)]