21405936

素因数分解:

$2^4\times 3^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:274

約数の個数: 80

約数和(自身を含む): 57808800

約数和(自身を除く): 36402864

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 41, 48, 73, 82, 123, 146, 149, 164, 219, 246, 292, 298, 328, 438, 447, 492, 584, 596, 656, 876, 894, 984, 1168, 1192, 1752, 1788, 1968, 2384, 2993, 3504, 3576, 5986, 6109, 7152, 8979, 10877, 11972, 12218, 17958, 18327, 21754, 23944, 24436, 32631, 35916, 36654, 43508, 47888, 48872, 65262, 71832, 73308, 87016, 97744, 130524, 143664, 146616, 174032, 261048, 293232, 445957, 522096, 891914, 1337871, 1783828, 2675742, 3567656, 5351484, 7135312, 10702968, 21405936]

約数ペア:

[(1, 21405936), (2, 10702968), (3, 7135312), (4, 5351484), (6, 3567656), (8, 2675742), (12, 1783828), (16, 1337871), (24, 891914), (41, 522096), (48, 445957), (73, 293232), (82, 261048), (123, 174032), (146, 146616), (149, 143664), (164, 130524), (219, 97744), (246, 87016), (292, 73308), (298, 71832), (328, 65262), (438, 48872), (447, 47888), (492, 43508), (584, 36654), (596, 35916), (656, 32631), (876, 24436), (894, 23944), (984, 21754), (1168, 18327), (1192, 17958), (1752, 12218), (1788, 11972), (1968, 10877), (2384, 8979), (2993, 7152), (3504, 6109), (3576, 5986)]