321416680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 815431680

約数和(自身を除く): 494015000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 127, 130, 155, 157, 248, 254, 260, 310, 314, 403, 508, 520, 620, 628, 635, 785, 806, 1016, 1240, 1256, 1270, 1570, 1612, 1651, 2015, 2041, 2540, 3140, 3224, 3302, 3937, 4030, 4082, 4867, 5080, 6280, 6604, 7874, 8060, 8164, 8255, 9734, 10205, 13208, 15748, 16120, 16328, 16510, 19468, 19685, 19939, 20410, 24335, 31496, 33020, 38936, 39370, 39878, 40820, 48670, 51181, 63271, 66040, 78740, 79756, 81640, 97340, 99695, 102362, 126542, 157480, 159512, 194680, 199390, 204724, 253084, 255905, 259207, 316355, 398780, 409448, 506168, 511810, 518414, 618109, 632710, 797560, 1023620, 1036828, 1236218, 1265420, 1296035, 2047240, 2073656, 2472436, 2530840, 2592070, 3090545, 4944872, 5184140, 6181090, 8035417, 10368280, 12362180, 16070834, 24724360, 32141668, 40177085, 64283336, 80354170, 160708340, 321416680]

約数ペア:

[(1, 321416680), (2, 160708340), (4, 80354170), (5, 64283336), (8, 40177085), (10, 32141668), (13, 24724360), (20, 16070834), (26, 12362180), (31, 10368280), (40, 8035417), (52, 6181090), (62, 5184140), (65, 4944872), (104, 3090545), (124, 2592070), (127, 2530840), (130, 2472436), (155, 2073656), (157, 2047240), (248, 1296035), (254, 1265420), (260, 1236218), (310, 1036828), (314, 1023620), (403, 797560), (508, 632710), (520, 618109), (620, 518414), (628, 511810), (635, 506168), (785, 409448), (806, 398780), (1016, 316355), (1240, 259207), (1256, 255905), (1270, 253084), (1570, 204724), (1612, 199390), (1651, 194680), (2015, 159512), (2041, 157480), (2540, 126542), (3140, 102362), (3224, 99695), (3302, 97340), (3937, 81640), (4030, 79756), (4082, 78740), (4867, 66040), (5080, 63271), (6280, 51181), (6604, 48670), (7874, 40820), (8060, 39878), (8164, 39370), (8255, 38936), (9734, 33020), (10205, 31496), (13208, 24335), (15748, 20410), (16120, 19939), (16328, 19685), (16510, 19468)]