21549240

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{739}}^1$

素因数の和:768

約数の個数: 112

約数和(自身を含む): 72793800

約数和(自身を除く): 51244560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 729, 739, 810, 972, 1080, 1215, 1458, 1478, 1620, 1944, 2217, 2430, 2916, 2956, 3240, 3645, 3695, 4434, 4860, 5832, 5912, 6651, 7290, 7390, 8868, 9720, 11085, 13302, 14580, 14780, 17736, 19953, 22170, 26604, 29160, 29560, 33255, 39906, 44340, 53208, 59859, 66510, 79812, 88680, 99765, 119718, 133020, 159624, 179577, 199530, 239436, 266040, 299295, 359154, 399060, 478872, 538731, 598590, 718308, 798120, 897885, 1077462, 1197180, 1436616, 1795770, 2154924, 2394360, 2693655, 3591540, 4309848, 5387310, 7183080, 10774620, 21549240]

約数ペア:

[(1, 21549240), (2, 10774620), (3, 7183080), (4, 5387310), (5, 4309848), (6, 3591540), (8, 2693655), (9, 2394360), (10, 2154924), (12, 1795770), (15, 1436616), (18, 1197180), (20, 1077462), (24, 897885), (27, 798120), (30, 718308), (36, 598590), (40, 538731), (45, 478872), (54, 399060), (60, 359154), (72, 299295), (81, 266040), (90, 239436), (108, 199530), (120, 179577), (135, 159624), (162, 133020), (180, 119718), (216, 99765), (243, 88680), (270, 79812), (324, 66510), (360, 59859), (405, 53208), (486, 44340), (540, 39906), (648, 33255), (729, 29560), (739, 29160), (810, 26604), (972, 22170), (1080, 19953), (1215, 17736), (1458, 14780), (1478, 14580), (1620, 13302), (1944, 11085), (2217, 9720), (2430, 8868), (2916, 7390), (2956, 7290), (3240, 6651), (3645, 5912), (3695, 5832), (4434, 4860)]