20161383920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{178609}}^1$

素因数の和:178722

約数の個数: 80

約数和(自身を含む): 50230847520

約数和(自身を除く): 30069463600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 83, 85, 136, 166, 170, 272, 332, 340, 415, 664, 680, 830, 1328, 1360, 1411, 1660, 2822, 3320, 5644, 6640, 7055, 11288, 14110, 22576, 28220, 56440, 112880, 178609, 357218, 714436, 893045, 1428872, 1786090, 2857744, 3036353, 3572180, 6072706, 7144360, 12145412, 14288720, 14824547, 15181765, 24290824, 29649094, 30363530, 48581648, 59298188, 60727060, 74122735, 118596376, 121454120, 148245470, 237192752, 242908240, 252017299, 296490940, 504034598, 592981880, 1008069196, 1185963760, 1260086495, 2016138392, 2520172990, 4032276784, 5040345980, 10080691960, 20161383920]

約数ペア:

[(1, 20161383920), (2, 10080691960), (4, 5040345980), (5, 4032276784), (8, 2520172990), (10, 2016138392), (16, 1260086495), (17, 1185963760), (20, 1008069196), (34, 592981880), (40, 504034598), (68, 296490940), (80, 252017299), (83, 242908240), (85, 237192752), (136, 148245470), (166, 121454120), (170, 118596376), (272, 74122735), (332, 60727060), (340, 59298188), (415, 48581648), (664, 30363530), (680, 29649094), (830, 24290824), (1328, 15181765), (1360, 14824547), (1411, 14288720), (1660, 12145412), (2822, 7144360), (3320, 6072706), (5644, 3572180), (6640, 3036353), (7055, 2857744), (11288, 1786090), (14110, 1428872), (22576, 893045), (28220, 714436), (56440, 357218), (112880, 178609)]