16221420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 49546224

約数和(自身を除く): 33324804

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 397, 454, 681, 794, 908, 1135, 1191, 1362, 1588, 1985, 2043, 2270, 2382, 2724, 3405, 3573, 3970, 4086, 4540, 4764, 5955, 6810, 7146, 7940, 8172, 10215, 11910, 13620, 14292, 17865, 20430, 23820, 35730, 40860, 71460, 90119, 180238, 270357, 360476, 450595, 540714, 811071, 901190, 1081428, 1351785, 1622142, 1802380, 2703570, 3244284, 4055355, 5407140, 8110710, 16221420]

約数ペア:

[(1, 16221420), (2, 8110710), (3, 5407140), (4, 4055355), (5, 3244284), (6, 2703570), (9, 1802380), (10, 1622142), (12, 1351785), (15, 1081428), (18, 901190), (20, 811071), (30, 540714), (36, 450595), (45, 360476), (60, 270357), (90, 180238), (180, 90119), (227, 71460), (397, 40860), (454, 35730), (681, 23820), (794, 20430), (908, 17865), (1135, 14292), (1191, 13620), (1362, 11910), (1588, 10215), (1985, 8172), (2043, 7940), (2270, 7146), (2382, 6810), (2724, 5955), (3405, 4764), (3573, 4540), (3970, 4086)]