20640360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 128

約数和(自身を含む): 67858560

約数和(自身を除く): 47218200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 101, 104, 120, 130, 131, 156, 195, 202, 260, 262, 303, 312, 390, 393, 404, 505, 520, 524, 606, 655, 780, 786, 808, 1010, 1048, 1212, 1310, 1313, 1515, 1560, 1572, 1703, 1965, 2020, 2424, 2620, 2626, 3030, 3144, 3406, 3930, 3939, 4040, 5109, 5240, 5252, 6060, 6565, 6812, 7860, 7878, 8515, 10218, 10504, 12120, 13130, 13231, 13624, 15720, 15756, 17030, 19695, 20436, 25545, 26260, 26462, 31512, 34060, 39390, 39693, 40872, 51090, 52520, 52924, 66155, 68120, 78780, 79386, 102180, 105848, 132310, 157560, 158772, 172003, 198465, 204360, 264620, 317544, 344006, 396930, 516009, 529240, 688012, 793860, 860015, 1032018, 1376024, 1587720, 1720030, 2064036, 2580045, 3440060, 4128072, 5160090, 6880120, 10320180, 20640360]

約数ペア:

[(1, 20640360), (2, 10320180), (3, 6880120), (4, 5160090), (5, 4128072), (6, 3440060), (8, 2580045), (10, 2064036), (12, 1720030), (13, 1587720), (15, 1376024), (20, 1032018), (24, 860015), (26, 793860), (30, 688012), (39, 529240), (40, 516009), (52, 396930), (60, 344006), (65, 317544), (78, 264620), (101, 204360), (104, 198465), (120, 172003), (130, 158772), (131, 157560), (156, 132310), (195, 105848), (202, 102180), (260, 79386), (262, 78780), (303, 68120), (312, 66155), (390, 52924), (393, 52520), (404, 51090), (505, 40872), (520, 39693), (524, 39390), (606, 34060), (655, 31512), (780, 26462), (786, 26260), (808, 25545), (1010, 20436), (1048, 19695), (1212, 17030), (1310, 15756), (1313, 15720), (1515, 13624), (1560, 13231), (1572, 13130), (1703, 12120), (1965, 10504), (2020, 10218), (2424, 8515), (2620, 7878), (2626, 7860), (3030, 6812), (3144, 6565), (3406, 6060), (3930, 5252), (3939, 5240), (4040, 5109)]