15551380

素因数分解:

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

素因数の和:185

約数の個数: 72

約数和(自身を含む): 36523872

約数和(自身を除く): 20972492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 107, 130, 169, 172, 214, 215, 260, 338, 428, 430, 535, 559, 676, 845, 860, 1070, 1118, 1391, 1690, 2140, 2236, 2782, 2795, 3380, 4601, 5564, 5590, 6955, 7267, 9202, 11180, 13910, 14534, 18083, 18404, 23005, 27820, 29068, 36166, 36335, 46010, 59813, 72332, 72670, 90415, 92020, 119626, 145340, 180830, 239252, 299065, 361660, 598130, 777569, 1196260, 1555138, 3110276, 3887845, 7775690, 15551380]

約数ペア:

[(1, 15551380), (2, 7775690), (4, 3887845), (5, 3110276), (10, 1555138), (13, 1196260), (20, 777569), (26, 598130), (43, 361660), (52, 299065), (65, 239252), (86, 180830), (107, 145340), (130, 119626), (169, 92020), (172, 90415), (214, 72670), (215, 72332), (260, 59813), (338, 46010), (428, 36335), (430, 36166), (535, 29068), (559, 27820), (676, 23005), (845, 18404), (860, 18083), (1070, 14534), (1118, 13910), (1391, 11180), (1690, 9202), (2140, 7267), (2236, 6955), (2782, 5590), (2795, 5564), (3380, 4601)]