164370380

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1\times {\mathrm{439}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 351341760

約数和(自身を除く): 186971380

約数列:

[1, 2, 4, 5, 10, 20, 97, 193, 194, 386, 388, 439, 485, 772, 878, 965, 970, 1756, 1930, 1940, 2195, 3860, 4390, 8780, 18721, 37442, 42583, 74884, 84727, 85166, 93605, 169454, 170332, 187210, 212915, 338908, 374420, 423635, 425830, 847270, 851660, 1694540, 8218519, 16437038, 32874076, 41092595, 82185190, 164370380]

約数ペア:

[(1, 164370380), (2, 82185190), (4, 41092595), (5, 32874076), (10, 16437038), (20, 8218519), (97, 1694540), (193, 851660), (194, 847270), (386, 425830), (388, 423635), (439, 374420), (485, 338908), (772, 212915), (878, 187210), (965, 170332), (970, 169454), (1756, 93605), (1930, 85166), (1940, 84727), (2195, 74884), (3860, 42583), (4390, 37442), (8780, 18721)]