20181648680

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{87427}}^1$

素因数の和:87666

約数の個数: 64

約数和(自身を含む): 47211120000

約数和(自身を除く): 27029471320

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 199, 232, 290, 398, 580, 796, 995, 1160, 1592, 1990, 3980, 5771, 7960, 11542, 23084, 28855, 46168, 57710, 87427, 115420, 174854, 230840, 349708, 437135, 699416, 874270, 1748540, 2535383, 3497080, 5070766, 10141532, 12676915, 17397973, 20283064, 25353830, 34795946, 50707660, 69591892, 86989865, 101415320, 139183784, 173979730, 347959460, 504541217, 695918920, 1009082434, 2018164868, 2522706085, 4036329736, 5045412170, 10090824340, 20181648680]

約数ペア:

[(1, 20181648680), (2, 10090824340), (4, 5045412170), (5, 4036329736), (8, 2522706085), (10, 2018164868), (20, 1009082434), (29, 695918920), (40, 504541217), (58, 347959460), (116, 173979730), (145, 139183784), (199, 101415320), (232, 86989865), (290, 69591892), (398, 50707660), (580, 34795946), (796, 25353830), (995, 20283064), (1160, 17397973), (1592, 12676915), (1990, 10141532), (3980, 5070766), (5771, 3497080), (7960, 2535383), (11542, 1748540), (23084, 874270), (28855, 699416), (46168, 437135), (57710, 349708), (87427, 230840), (115420, 174854)]