81216928

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1933}}^1$

素因数の和:2057

約数の個数: 48

約数和(自身を含む): 173990376

約数和(自身を除く): 92773448

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 101, 104, 202, 208, 404, 416, 808, 1313, 1616, 1933, 2626, 3232, 3866, 5252, 7732, 10504, 15464, 21008, 25129, 30928, 42016, 50258, 61856, 100516, 195233, 201032, 390466, 402064, 780932, 804128, 1561864, 2538029, 3123728, 5076058, 6247456, 10152116, 20304232, 40608464, 81216928]

約数ペア:

[(1, 81216928), (2, 40608464), (4, 20304232), (8, 10152116), (13, 6247456), (16, 5076058), (26, 3123728), (32, 2538029), (52, 1561864), (101, 804128), (104, 780932), (202, 402064), (208, 390466), (404, 201032), (416, 195233), (808, 100516), (1313, 61856), (1616, 50258), (1933, 42016), (2626, 30928), (3232, 25129), (3866, 21008), (5252, 15464), (7732, 10504)]