30887780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:705

約数の個数: 96

約数和(自身を含む): 83607552

約数和(自身を除く): 52719772

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 124, 140, 154, 155, 217, 220, 308, 310, 341, 385, 434, 620, 647, 682, 770, 868, 1085, 1294, 1364, 1540, 1705, 2170, 2387, 2588, 3235, 3410, 4340, 4529, 4774, 6470, 6820, 7117, 9058, 9548, 11935, 12940, 14234, 18116, 20057, 22645, 23870, 28468, 35585, 40114, 45290, 47740, 49819, 71170, 80228, 90580, 99638, 100285, 140399, 142340, 199276, 200570, 220627, 249095, 280798, 401140, 441254, 498190, 561596, 701995, 882508, 996380, 1103135, 1403990, 1544389, 2206270, 2807980, 3088778, 4412540, 6177556, 7721945, 15443890, 30887780]

約数ペア:

[(1, 30887780), (2, 15443890), (4, 7721945), (5, 6177556), (7, 4412540), (10, 3088778), (11, 2807980), (14, 2206270), (20, 1544389), (22, 1403990), (28, 1103135), (31, 996380), (35, 882508), (44, 701995), (55, 561596), (62, 498190), (70, 441254), (77, 401140), (110, 280798), (124, 249095), (140, 220627), (154, 200570), (155, 199276), (217, 142340), (220, 140399), (308, 100285), (310, 99638), (341, 90580), (385, 80228), (434, 71170), (620, 49819), (647, 47740), (682, 45290), (770, 40114), (868, 35585), (1085, 28468), (1294, 23870), (1364, 22645), (1540, 20057), (1705, 18116), (2170, 14234), (2387, 12940), (2588, 11935), (3235, 9548), (3410, 9058), (4340, 7117), (4529, 6820), (4774, 6470)]