20854260

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{613}}^1$

素因数の和:644

約数の個数: 144

約数和(自身を含む): 75094656

約数和(自身を除く): 54240396

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 315, 324, 378, 405, 420, 486, 540, 567, 613, 630, 756, 810, 945, 972, 1134, 1215, 1226, 1260, 1620, 1701, 1839, 1890, 2268, 2430, 2452, 2835, 3065, 3402, 3678, 3780, 4291, 4860, 5517, 5670, 6130, 6804, 7356, 8505, 8582, 9195, 11034, 11340, 12260, 12873, 16551, 17010, 17164, 18390, 21455, 22068, 25746, 27585, 33102, 34020, 36780, 38619, 42910, 49653, 51492, 55170, 64365, 66204, 77238, 82755, 85820, 99306, 110340, 115857, 128730, 148959, 154476, 165510, 193095, 198612, 231714, 248265, 257460, 297918, 331020, 347571, 386190, 463428, 496530, 579285, 595836, 695142, 744795, 772380, 993060, 1042713, 1158570, 1390284, 1489590, 1737855, 2085426, 2317140, 2979180, 3475710, 4170852, 5213565, 6951420, 10427130, 20854260]

約数ペア:

[(1, 20854260), (2, 10427130), (3, 6951420), (4, 5213565), (5, 4170852), (6, 3475710), (7, 2979180), (9, 2317140), (10, 2085426), (12, 1737855), (14, 1489590), (15, 1390284), (18, 1158570), (20, 1042713), (21, 993060), (27, 772380), (28, 744795), (30, 695142), (35, 595836), (36, 579285), (42, 496530), (45, 463428), (54, 386190), (60, 347571), (63, 331020), (70, 297918), (81, 257460), (84, 248265), (90, 231714), (105, 198612), (108, 193095), (126, 165510), (135, 154476), (140, 148959), (162, 128730), (180, 115857), (189, 110340), (210, 99306), (243, 85820), (252, 82755), (270, 77238), (315, 66204), (324, 64365), (378, 55170), (405, 51492), (420, 49653), (486, 42910), (540, 38619), (567, 36780), (613, 34020), (630, 33102), (756, 27585), (810, 25746), (945, 22068), (972, 21455), (1134, 18390), (1215, 17164), (1226, 17010), (1260, 16551), (1620, 12873), (1701, 12260), (1839, 11340), (1890, 11034), (2268, 9195), (2430, 8582), (2452, 8505), (2835, 7356), (3065, 6804), (3402, 6130), (3678, 5670), (3780, 5517), (4291, 4860)]