20197780304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{278237}}^1$

素因数の和:278607

約数の個数: 40

約数和(自身を含む): 42264352200

約数和(自身を除く): 22066571896

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 349, 698, 1396, 2792, 4537, 5584, 9074, 18148, 36296, 72592, 278237, 556474, 1112948, 2225896, 3617081, 4451792, 7234162, 14468324, 28936648, 57873296, 97104713, 194209426, 388418852, 776837704, 1262361269, 1553675408, 2524722538, 5049445076, 10098890152, 20197780304]

約数ペア:

[(1, 20197780304), (2, 10098890152), (4, 5049445076), (8, 2524722538), (13, 1553675408), (16, 1262361269), (26, 776837704), (52, 388418852), (104, 194209426), (208, 97104713), (349, 57873296), (698, 28936648), (1396, 14468324), (2792, 7234162), (4537, 4451792), (5584, 3617081), (9074, 2225896), (18148, 1112948), (36296, 556474), (72592, 278237)]