21268380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:739

約数の個数: 96

約数和(自身を含む): 69027840

約数和(自身を除く): 47759460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 641, 790, 948, 1106, 1185, 1282, 1580, 1659, 1923, 2212, 2370, 2564, 2765, 3205, 3318, 3846, 4487, 4740, 5530, 6410, 6636, 7692, 8295, 8974, 9615, 11060, 12820, 13461, 16590, 17948, 19230, 22435, 26922, 33180, 38460, 44870, 50639, 53844, 67305, 89740, 101278, 134610, 151917, 202556, 253195, 269220, 303834, 354473, 506390, 607668, 708946, 759585, 1012780, 1063419, 1417892, 1519170, 1772365, 2126838, 3038340, 3544730, 4253676, 5317095, 7089460, 10634190, 21268380]

約数ペア:

[(1, 21268380), (2, 10634190), (3, 7089460), (4, 5317095), (5, 4253676), (6, 3544730), (7, 3038340), (10, 2126838), (12, 1772365), (14, 1519170), (15, 1417892), (20, 1063419), (21, 1012780), (28, 759585), (30, 708946), (35, 607668), (42, 506390), (60, 354473), (70, 303834), (79, 269220), (84, 253195), (105, 202556), (140, 151917), (158, 134610), (210, 101278), (237, 89740), (316, 67305), (395, 53844), (420, 50639), (474, 44870), (553, 38460), (641, 33180), (790, 26922), (948, 22435), (1106, 19230), (1185, 17948), (1282, 16590), (1580, 13461), (1659, 12820), (1923, 11060), (2212, 9615), (2370, 8974), (2564, 8295), (2765, 7692), (3205, 6636), (3318, 6410), (3846, 5530), (4487, 4740)]