20194688787

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{457}}^1\times {\mathrm{1031}}^1$

素因数の和:1668

約数の個数: 64

約数和(自身を含む): 33456482304

約数和(自身を除く): 13261793517

約数列:

[1, 3, 7, 13, 21, 39, 91, 157, 273, 457, 471, 1031, 1099, 1371, 2041, 3093, 3199, 3297, 5941, 6123, 7217, 9597, 13403, 14287, 17823, 21651, 40209, 41587, 42861, 71749, 93821, 124761, 161867, 215247, 281463, 471167, 485601, 502243, 932737, 1133069, 1413501, 1506729, 2104271, 2798211, 3298169, 3399207, 6125171, 6312813, 6529159, 9894507, 14729897, 18375513, 19587477, 42876197, 44189691, 73973219, 128628591, 221919657, 517812533, 961651847, 1553437599, 2884955541, 6731562929, 20194688787]

約数ペア:

[(1, 20194688787), (3, 6731562929), (7, 2884955541), (13, 1553437599), (21, 961651847), (39, 517812533), (91, 221919657), (157, 128628591), (273, 73973219), (457, 44189691), (471, 42876197), (1031, 19587477), (1099, 18375513), (1371, 14729897), (2041, 9894507), (3093, 6529159), (3199, 6312813), (3297, 6125171), (5941, 3399207), (6123, 3298169), (7217, 2798211), (9597, 2104271), (13403, 1506729), (14287, 1413501), (17823, 1133069), (21651, 932737), (40209, 502243), (41587, 485601), (42861, 471167), (71749, 281463), (93821, 215247), (124761, 161867)]