20171781680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3067}}^1\times {\mathrm{4327}}^1$

素因数の和:7426

約数の個数: 80

約数和(自身を含む): 49395290880

約数和(自身を除く): 29223509200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 3067, 4327, 6134, 8654, 12268, 15335, 17308, 21635, 24536, 30670, 34616, 43270, 49072, 58273, 61340, 69232, 82213, 86540, 116546, 122680, 164426, 173080, 233092, 245360, 291365, 328852, 346160, 411065, 466184, 582730, 657704, 822130, 932368, 1165460, 1315408, 1644260, 2330920, 3288520, 4661840, 6577040, 13270909, 26541818, 53083636, 66354545, 106167272, 132709090, 212334544, 252147271, 265418180, 504294542, 530836360, 1008589084, 1061672720, 1260736355, 2017178168, 2521472710, 4034356336, 5042945420, 10085890840, 20171781680]

約数ペア:

[(1, 20171781680), (2, 10085890840), (4, 5042945420), (5, 4034356336), (8, 2521472710), (10, 2017178168), (16, 1260736355), (19, 1061672720), (20, 1008589084), (38, 530836360), (40, 504294542), (76, 265418180), (80, 252147271), (95, 212334544), (152, 132709090), (190, 106167272), (304, 66354545), (380, 53083636), (760, 26541818), (1520, 13270909), (3067, 6577040), (4327, 4661840), (6134, 3288520), (8654, 2330920), (12268, 1644260), (15335, 1315408), (17308, 1165460), (21635, 932368), (24536, 822130), (30670, 657704), (34616, 582730), (43270, 466184), (49072, 411065), (58273, 346160), (61340, 328852), (69232, 291365), (82213, 245360), (86540, 233092), (116546, 173080), (122680, 164426)]