19447940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 43034544

約数和(自身を除く): 23586604

約数列:

[1, 2, 4, 5, 10, 20, 37, 41, 74, 82, 148, 164, 185, 205, 370, 410, 641, 740, 820, 1282, 1517, 2564, 3034, 3205, 6068, 6410, 7585, 12820, 15170, 23717, 26281, 30340, 47434, 52562, 94868, 105124, 118585, 131405, 237170, 262810, 474340, 525620, 972397, 1944794, 3889588, 4861985, 9723970, 19447940]

約数ペア:

[(1, 19447940), (2, 9723970), (4, 4861985), (5, 3889588), (10, 1944794), (20, 972397), (37, 525620), (41, 474340), (74, 262810), (82, 237170), (148, 131405), (164, 118585), (185, 105124), (205, 94868), (370, 52562), (410, 47434), (641, 30340), (740, 26281), (820, 23717), (1282, 15170), (1517, 12820), (2564, 7585), (3034, 6410), (3205, 6068)]