19485384880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{279641}}^1$

素因数の和:279734

約数の個数: 80

約数和(自身を含む): 49516768224

約数和(自身を除く): 30031383344

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 335, 520, 536, 670, 871, 1040, 1072, 1340, 1742, 2680, 3484, 4355, 5360, 6968, 8710, 13936, 17420, 34840, 69680, 279641, 559282, 1118564, 1398205, 2237128, 2796410, 3635333, 4474256, 5592820, 7270666, 11185640, 14541332, 18176665, 18735947, 22371280, 29082664, 36353330, 37471894, 58165328, 72706660, 74943788, 93679735, 145413320, 149887576, 187359470, 243567311, 290826640, 299775152, 374718940, 487134622, 749437880, 974269244, 1217836555, 1498875760, 1948538488, 2435673110, 3897076976, 4871346220, 9742692440, 19485384880]

約数ペア:

[(1, 19485384880), (2, 9742692440), (4, 4871346220), (5, 3897076976), (8, 2435673110), (10, 1948538488), (13, 1498875760), (16, 1217836555), (20, 974269244), (26, 749437880), (40, 487134622), (52, 374718940), (65, 299775152), (67, 290826640), (80, 243567311), (104, 187359470), (130, 149887576), (134, 145413320), (208, 93679735), (260, 74943788), (268, 72706660), (335, 58165328), (520, 37471894), (536, 36353330), (670, 29082664), (871, 22371280), (1040, 18735947), (1072, 18176665), (1340, 14541332), (1742, 11185640), (2680, 7270666), (3484, 5592820), (4355, 4474256), (5360, 3635333), (6968, 2796410), (8710, 2237128), (13936, 1398205), (17420, 1118564), (34840, 559282), (69680, 279641)]