21284970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1283}}^1$

素因数の和:1379

約数の個数: 64

約数和(自身を含む): 59166720

約数和(自身を除く): 37881750

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 79, 105, 158, 210, 237, 395, 474, 553, 790, 1106, 1185, 1283, 1659, 2370, 2566, 2765, 3318, 3849, 5530, 6415, 7698, 8295, 8981, 12830, 16590, 17962, 19245, 26943, 38490, 44905, 53886, 89810, 101357, 134715, 202714, 269430, 304071, 506785, 608142, 709499, 1013570, 1418998, 1520355, 2128497, 3040710, 3547495, 4256994, 7094990, 10642485, 21284970]

約数ペア:

[(1, 21284970), (2, 10642485), (3, 7094990), (5, 4256994), (6, 3547495), (7, 3040710), (10, 2128497), (14, 1520355), (15, 1418998), (21, 1013570), (30, 709499), (35, 608142), (42, 506785), (70, 304071), (79, 269430), (105, 202714), (158, 134715), (210, 101357), (237, 89810), (395, 53886), (474, 44905), (553, 38490), (790, 26943), (1106, 19245), (1185, 17962), (1283, 16590), (1659, 12830), (2370, 8981), (2566, 8295), (2765, 7698), (3318, 6415), (3849, 5530)]