72779140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{811}}^1$

素因数の和:1468

約数の個数: 48

約数和(自身を含む): 175158144

約数和(自身を除く): 102379004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 641, 811, 1282, 1622, 2564, 3205, 3244, 4055, 4487, 5677, 6410, 8110, 8974, 11354, 12820, 16220, 17948, 22435, 22708, 28385, 44870, 56770, 89740, 113540, 519851, 1039702, 2079404, 2599255, 3638957, 5198510, 7277914, 10397020, 14555828, 18194785, 36389570, 72779140]

約数ペア:

[(1, 72779140), (2, 36389570), (4, 18194785), (5, 14555828), (7, 10397020), (10, 7277914), (14, 5198510), (20, 3638957), (28, 2599255), (35, 2079404), (70, 1039702), (140, 519851), (641, 113540), (811, 89740), (1282, 56770), (1622, 44870), (2564, 28385), (3205, 22708), (3244, 22435), (4055, 17948), (4487, 16220), (5677, 12820), (6410, 11354), (8110, 8974)]