820545437740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{9407767}}^1$

素因数の和:9407879

約数の個数: 72

約数和(自身を含む): 2026997693280

約数和(自身を除く): 1206452255540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 356, 445, 490, 623, 890, 980, 1246, 1780, 2492, 3115, 4361, 6230, 8722, 12460, 17444, 21805, 43610, 87220, 9407767, 18815534, 37631068, 47038835, 65854369, 94077670, 131708738, 188155340, 263417476, 329271845, 460980583, 658543690, 837291263, 921961166, 1317087380, 1674582526, 1843922332, 2304902915, 3349165052, 4186456315, 4609805830, 5861038841, 8372912630, 9219611660, 11722077682, 16745825260, 23444155364, 29305194205, 41027271887, 58610388410, 82054543774, 117220776820, 164109087548, 205136359435, 410272718870, 820545437740]

約数ペア:

[(1, 820545437740), (2, 410272718870), (4, 205136359435), (5, 164109087548), (7, 117220776820), (10, 82054543774), (14, 58610388410), (20, 41027271887), (28, 29305194205), (35, 23444155364), (49, 16745825260), (70, 11722077682), (89, 9219611660), (98, 8372912630), (140, 5861038841), (178, 4609805830), (196, 4186456315), (245, 3349165052), (356, 2304902915), (445, 1843922332), (490, 1674582526), (623, 1317087380), (890, 921961166), (980, 837291263), (1246, 658543690), (1780, 460980583), (2492, 329271845), (3115, 263417476), (4361, 188155340), (6230, 131708738), (8722, 94077670), (12460, 65854369), (17444, 47038835), (21805, 37631068), (43610, 18815534), (87220, 9407767)]