21603420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{467}}^1$

素因数の和:739

約数の個数: 72

約数和(自身を含む): 65926224

約数和(自身を除く): 44322804

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 467, 514, 771, 934, 1028, 1285, 1401, 1542, 1868, 2313, 2335, 2570, 2802, 3084, 3855, 4203, 4626, 4670, 5140, 5604, 7005, 7710, 8406, 9252, 9340, 11565, 14010, 15420, 16812, 21015, 23130, 28020, 42030, 46260, 84060, 120019, 240038, 360057, 480076, 600095, 720114, 1080171, 1200190, 1440228, 1800285, 2160342, 2400380, 3600570, 4320684, 5400855, 7201140, 10801710, 21603420]

約数ペア:

[(1, 21603420), (2, 10801710), (3, 7201140), (4, 5400855), (5, 4320684), (6, 3600570), (9, 2400380), (10, 2160342), (12, 1800285), (15, 1440228), (18, 1200190), (20, 1080171), (30, 720114), (36, 600095), (45, 480076), (60, 360057), (90, 240038), (180, 120019), (257, 84060), (467, 46260), (514, 42030), (771, 28020), (934, 23130), (1028, 21015), (1285, 16812), (1401, 15420), (1542, 14010), (1868, 11565), (2313, 9340), (2335, 9252), (2570, 8406), (2802, 7710), (3084, 7005), (3855, 5604), (4203, 5140), (4626, 4670)]