20686920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 65802240

約数和(自身を除く): 45115320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 67, 83, 93, 120, 124, 134, 155, 166, 186, 201, 248, 249, 268, 310, 332, 335, 372, 402, 415, 465, 498, 536, 620, 664, 670, 744, 804, 830, 930, 996, 1005, 1240, 1245, 1340, 1608, 1660, 1860, 1992, 2010, 2077, 2490, 2573, 2680, 3320, 3720, 4020, 4154, 4980, 5146, 5561, 6231, 7719, 8040, 8308, 9960, 10292, 10385, 11122, 12462, 12865, 15438, 16616, 16683, 20584, 20770, 22244, 24924, 25730, 27805, 30876, 31155, 33366, 38595, 41540, 44488, 49848, 51460, 55610, 61752, 62310, 66732, 77190, 83080, 83415, 102920, 111220, 124620, 133464, 154380, 166830, 172391, 222440, 249240, 308760, 333660, 344782, 517173, 667320, 689564, 861955, 1034346, 1379128, 1723910, 2068692, 2585865, 3447820, 4137384, 5171730, 6895640, 10343460, 20686920]

約数ペア:

[(1, 20686920), (2, 10343460), (3, 6895640), (4, 5171730), (5, 4137384), (6, 3447820), (8, 2585865), (10, 2068692), (12, 1723910), (15, 1379128), (20, 1034346), (24, 861955), (30, 689564), (31, 667320), (40, 517173), (60, 344782), (62, 333660), (67, 308760), (83, 249240), (93, 222440), (120, 172391), (124, 166830), (134, 154380), (155, 133464), (166, 124620), (186, 111220), (201, 102920), (248, 83415), (249, 83080), (268, 77190), (310, 66732), (332, 62310), (335, 61752), (372, 55610), (402, 51460), (415, 49848), (465, 44488), (498, 41540), (536, 38595), (620, 33366), (664, 31155), (670, 30876), (744, 27805), (804, 25730), (830, 24924), (930, 22244), (996, 20770), (1005, 20584), (1240, 16683), (1245, 16616), (1340, 15438), (1608, 12865), (1660, 12462), (1860, 11122), (1992, 10385), (2010, 10292), (2077, 9960), (2490, 8308), (2573, 8040), (2680, 7719), (3320, 6231), (3720, 5561), (4020, 5146), (4154, 4980)]