65500520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{523}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 153930240

約数和(自身を除く): 88429720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 155, 202, 248, 310, 404, 505, 523, 620, 808, 1010, 1046, 1240, 2020, 2092, 2615, 3131, 4040, 4184, 5230, 6262, 10460, 12524, 15655, 16213, 20920, 25048, 31310, 32426, 52823, 62620, 64852, 81065, 105646, 125240, 129704, 162130, 211292, 264115, 324260, 422584, 528230, 648520, 1056460, 1637513, 2112920, 3275026, 6550052, 8187565, 13100104, 16375130, 32750260, 65500520]

約数ペア:

[(1, 65500520), (2, 32750260), (4, 16375130), (5, 13100104), (8, 8187565), (10, 6550052), (20, 3275026), (31, 2112920), (40, 1637513), (62, 1056460), (101, 648520), (124, 528230), (155, 422584), (202, 324260), (248, 264115), (310, 211292), (404, 162130), (505, 129704), (523, 125240), (620, 105646), (808, 81065), (1010, 64852), (1046, 62620), (1240, 52823), (2020, 32426), (2092, 31310), (2615, 25048), (3131, 20920), (4040, 16213), (4184, 15655), (5230, 12524), (6262, 10460)]