1689866420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{247781}}^1$

素因数の和:247832

約数の個数: 48

約数和(自身を含む): 3996228096

約数和(自身を除く): 2306361676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 247781, 495562, 991124, 1238905, 2477810, 2725591, 4955620, 5451182, 7681211, 10902364, 13627955, 15362422, 27255910, 30724844, 38406055, 54511820, 76812110, 84493321, 153624220, 168986642, 337973284, 422466605, 844933210, 1689866420]

約数ペア:

[(1, 1689866420), (2, 844933210), (4, 422466605), (5, 337973284), (10, 168986642), (11, 153624220), (20, 84493321), (22, 76812110), (31, 54511820), (44, 38406055), (55, 30724844), (62, 27255910), (110, 15362422), (124, 13627955), (155, 10902364), (220, 7681211), (310, 5451182), (341, 4955620), (620, 2725591), (682, 2477810), (1364, 1238905), (1705, 991124), (3410, 495562), (6820, 247781)]