28804280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 68428800

約数和(自身を除く): 39624520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 131, 184, 230, 239, 262, 460, 478, 524, 655, 920, 956, 1048, 1195, 1310, 1912, 2390, 2620, 3013, 4780, 5240, 5497, 6026, 9560, 10994, 12052, 15065, 21988, 24104, 27485, 30130, 31309, 43976, 54970, 60260, 62618, 109940, 120520, 125236, 156545, 219880, 250472, 313090, 626180, 720107, 1252360, 1440214, 2880428, 3600535, 5760856, 7201070, 14402140, 28804280]

約数ペア:

[(1, 28804280), (2, 14402140), (4, 7201070), (5, 5760856), (8, 3600535), (10, 2880428), (20, 1440214), (23, 1252360), (40, 720107), (46, 626180), (92, 313090), (115, 250472), (131, 219880), (184, 156545), (230, 125236), (239, 120520), (262, 109940), (460, 62618), (478, 60260), (524, 54970), (655, 43976), (920, 31309), (956, 30130), (1048, 27485), (1195, 24104), (1310, 21988), (1912, 15065), (2390, 12052), (2620, 10994), (3013, 9560), (4780, 6026), (5240, 5497)]