21785190

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{457}}^1$

素因数の和:701

約数の個数: 64

約数和(自身を含む): 60148224

約数和(自身を除く): 38363034

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 227, 454, 457, 681, 914, 1135, 1362, 1371, 1589, 2270, 2285, 2742, 3178, 3199, 3405, 4570, 4767, 6398, 6810, 6855, 7945, 9534, 9597, 13710, 15890, 15995, 19194, 23835, 31990, 47670, 47985, 95970, 103739, 207478, 311217, 518695, 622434, 726173, 1037390, 1452346, 1556085, 2178519, 3112170, 3630865, 4357038, 7261730, 10892595, 21785190]

約数ペア:

[(1, 21785190), (2, 10892595), (3, 7261730), (5, 4357038), (6, 3630865), (7, 3112170), (10, 2178519), (14, 1556085), (15, 1452346), (21, 1037390), (30, 726173), (35, 622434), (42, 518695), (70, 311217), (105, 207478), (210, 103739), (227, 95970), (454, 47985), (457, 47670), (681, 31990), (914, 23835), (1135, 19194), (1362, 15995), (1371, 15890), (1589, 13710), (2270, 9597), (2285, 9534), (2742, 7945), (3178, 6855), (3199, 6810), (3405, 6398), (4570, 4767)]