131001040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{523}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 318122496

約数和(自身を除く): 187121456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 124, 155, 202, 248, 310, 404, 496, 505, 523, 620, 808, 1010, 1046, 1240, 1616, 2020, 2092, 2480, 2615, 3131, 4040, 4184, 5230, 6262, 8080, 8368, 10460, 12524, 15655, 16213, 20920, 25048, 31310, 32426, 41840, 50096, 52823, 62620, 64852, 81065, 105646, 125240, 129704, 162130, 211292, 250480, 259408, 264115, 324260, 422584, 528230, 648520, 845168, 1056460, 1297040, 1637513, 2112920, 3275026, 4225840, 6550052, 8187565, 13100104, 16375130, 26200208, 32750260, 65500520, 131001040]

約数ペア:

[(1, 131001040), (2, 65500520), (4, 32750260), (5, 26200208), (8, 16375130), (10, 13100104), (16, 8187565), (20, 6550052), (31, 4225840), (40, 3275026), (62, 2112920), (80, 1637513), (101, 1297040), (124, 1056460), (155, 845168), (202, 648520), (248, 528230), (310, 422584), (404, 324260), (496, 264115), (505, 259408), (523, 250480), (620, 211292), (808, 162130), (1010, 129704), (1046, 125240), (1240, 105646), (1616, 81065), (2020, 64852), (2092, 62620), (2480, 52823), (2615, 50096), (3131, 41840), (4040, 32426), (4184, 31310), (5230, 25048), (6262, 20920), (8080, 16213), (8368, 15655), (10460, 12524)]