51439180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 120213072

約数和(自身を除く): 68773892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 107, 130, 172, 214, 215, 260, 428, 430, 535, 559, 860, 1070, 1118, 1391, 1849, 2140, 2236, 2782, 2795, 3698, 4601, 5564, 5590, 6955, 7396, 9202, 9245, 11180, 13910, 18404, 18490, 23005, 24037, 27820, 36980, 46010, 48074, 59813, 92020, 96148, 119626, 120185, 197843, 239252, 240370, 299065, 395686, 480740, 598130, 791372, 989215, 1196260, 1978430, 2571959, 3956860, 5143918, 10287836, 12859795, 25719590, 51439180]

約数ペア:

[(1, 51439180), (2, 25719590), (4, 12859795), (5, 10287836), (10, 5143918), (13, 3956860), (20, 2571959), (26, 1978430), (43, 1196260), (52, 989215), (65, 791372), (86, 598130), (107, 480740), (130, 395686), (172, 299065), (214, 240370), (215, 239252), (260, 197843), (428, 120185), (430, 119626), (535, 96148), (559, 92020), (860, 59813), (1070, 48074), (1118, 46010), (1391, 36980), (1849, 27820), (2140, 24037), (2236, 23005), (2782, 18490), (2795, 18404), (3698, 13910), (4601, 11180), (5564, 9245), (5590, 9202), (6955, 7396)]