21285012

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{683}}^1$

素因数の和:757

約数の個数: 72

約数和(自身を含む): 58949856

約数和(自身を除く): 37664844

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 53, 84, 98, 106, 147, 159, 196, 212, 294, 318, 371, 588, 636, 683, 742, 1113, 1366, 1484, 2049, 2226, 2597, 2732, 4098, 4452, 4781, 5194, 7791, 8196, 9562, 10388, 14343, 15582, 19124, 28686, 31164, 33467, 36199, 57372, 66934, 72398, 100401, 108597, 133868, 144796, 200802, 217194, 253393, 401604, 434388, 506786, 760179, 1013572, 1520358, 1773751, 3040716, 3547502, 5321253, 7095004, 10642506, 21285012]

約数ペア:

[(1, 21285012), (2, 10642506), (3, 7095004), (4, 5321253), (6, 3547502), (7, 3040716), (12, 1773751), (14, 1520358), (21, 1013572), (28, 760179), (42, 506786), (49, 434388), (53, 401604), (84, 253393), (98, 217194), (106, 200802), (147, 144796), (159, 133868), (196, 108597), (212, 100401), (294, 72398), (318, 66934), (371, 57372), (588, 36199), (636, 33467), (683, 31164), (742, 28686), (1113, 19124), (1366, 15582), (1484, 14343), (2049, 10388), (2226, 9562), (2597, 8196), (2732, 7791), (4098, 5194), (4452, 4781)]