21000228135

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{9221}}^1$

素因数の和:9440

約数の個数: 64

約数和(自身を含む): 36226967040

約数和(自身を除く): 15226738905

約数列:

[1, 3, 5, 15, 19, 57, 61, 95, 131, 183, 285, 305, 393, 655, 915, 1159, 1965, 2489, 3477, 5795, 7467, 7991, 9221, 12445, 17385, 23973, 27663, 37335, 39955, 46105, 119865, 138315, 151829, 175199, 455487, 525597, 562481, 759145, 875995, 1207951, 1687443, 2277435, 2627985, 2812405, 3623853, 6039755, 8437215, 10687139, 18119265, 22951069, 32061417, 53435695, 68853207, 73685011, 114755345, 160307085, 221055033, 344266035, 368425055, 1105275165, 1400015209, 4200045627, 7000076045, 21000228135]

約数ペア:

[(1, 21000228135), (3, 7000076045), (5, 4200045627), (15, 1400015209), (19, 1105275165), (57, 368425055), (61, 344266035), (95, 221055033), (131, 160307085), (183, 114755345), (285, 73685011), (305, 68853207), (393, 53435695), (655, 32061417), (915, 22951069), (1159, 18119265), (1965, 10687139), (2489, 8437215), (3477, 6039755), (5795, 3623853), (7467, 2812405), (7991, 2627985), (9221, 2277435), (12445, 1687443), (17385, 1207951), (23973, 875995), (27663, 759145), (37335, 562481), (39955, 525597), (46105, 455487), (119865, 175199), (138315, 151829)]