84806680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2179}}^1$

素因数の和:2336

約数の個数: 64

約数和(自身を含む): 219744000

約数和(自身を除く): 134937320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1946, 2179, 2780, 3892, 4358, 4865, 5560, 7784, 8716, 9730, 10895, 15253, 17432, 19460, 21790, 30506, 38920, 43580, 61012, 76265, 87160, 122024, 152530, 302881, 305060, 605762, 610120, 1211524, 1514405, 2120167, 2423048, 3028810, 4240334, 6057620, 8480668, 10600835, 12115240, 16961336, 21201670, 42403340, 84806680]

約数ペア:

[(1, 84806680), (2, 42403340), (4, 21201670), (5, 16961336), (7, 12115240), (8, 10600835), (10, 8480668), (14, 6057620), (20, 4240334), (28, 3028810), (35, 2423048), (40, 2120167), (56, 1514405), (70, 1211524), (139, 610120), (140, 605762), (278, 305060), (280, 302881), (556, 152530), (695, 122024), (973, 87160), (1112, 76265), (1390, 61012), (1946, 43580), (2179, 38920), (2780, 30506), (3892, 21790), (4358, 19460), (4865, 17432), (5560, 15253), (7784, 10895), (8716, 9730)]