1386787420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1\times {\mathrm{4423}}^1$

素因数の和:4750

約数の個数: 48

約数和(自身を含む): 2972184768

約数和(自身を除く): 1585397348

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 257, 305, 514, 610, 1028, 1220, 1285, 2570, 4423, 5140, 8846, 15677, 17692, 22115, 31354, 44230, 62708, 78385, 88460, 156770, 269803, 313540, 539606, 1079212, 1136711, 1349015, 2273422, 2698030, 4546844, 5396060, 5683555, 11367110, 22734220, 69339371, 138678742, 277357484, 346696855, 693393710, 1386787420]

約数ペア:

[(1, 1386787420), (2, 693393710), (4, 346696855), (5, 277357484), (10, 138678742), (20, 69339371), (61, 22734220), (122, 11367110), (244, 5683555), (257, 5396060), (305, 4546844), (514, 2698030), (610, 2273422), (1028, 1349015), (1220, 1136711), (1285, 1079212), (2570, 539606), (4423, 313540), (5140, 269803), (8846, 156770), (15677, 88460), (17692, 78385), (22115, 62708), (31354, 44230)]