77837680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1249}}^1$

素因数の和:1322

約数の個数: 80

約数和(自身を含む): 195300000

約数和(自身を除く): 117462320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 656, 760, 779, 820, 1249, 1520, 1558, 1640, 2498, 3116, 3280, 3895, 4996, 6232, 6245, 7790, 9992, 12464, 12490, 15580, 19984, 23731, 24980, 31160, 47462, 49960, 51209, 62320, 94924, 99920, 102418, 118655, 189848, 204836, 237310, 256045, 379696, 409672, 474620, 512090, 819344, 949240, 972971, 1024180, 1898480, 1945942, 2048360, 3891884, 4096720, 4864855, 7783768, 9729710, 15567536, 19459420, 38918840, 77837680]

約数ペア:

[(1, 77837680), (2, 38918840), (4, 19459420), (5, 15567536), (8, 9729710), (10, 7783768), (16, 4864855), (19, 4096720), (20, 3891884), (38, 2048360), (40, 1945942), (41, 1898480), (76, 1024180), (80, 972971), (82, 949240), (95, 819344), (152, 512090), (164, 474620), (190, 409672), (205, 379696), (304, 256045), (328, 237310), (380, 204836), (410, 189848), (656, 118655), (760, 102418), (779, 99920), (820, 94924), (1249, 62320), (1520, 51209), (1558, 49960), (1640, 47462), (2498, 31160), (3116, 24980), (3280, 23731), (3895, 19984), (4996, 15580), (6232, 12490), (6245, 12464), (7790, 9992)]