16000020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:981

約数の個数: 72

約数和(自身を含む): 49061376

約数和(自身を除く): 33061356

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 863, 927, 1030, 1236, 1545, 1726, 1854, 2060, 2589, 3090, 3452, 3708, 4315, 4635, 5178, 6180, 7767, 8630, 9270, 10356, 12945, 15534, 17260, 18540, 25890, 31068, 38835, 51780, 77670, 88889, 155340, 177778, 266667, 355556, 444445, 533334, 800001, 888890, 1066668, 1333335, 1600002, 1777780, 2666670, 3200004, 4000005, 5333340, 8000010, 16000020]

約数ペア:

[(1, 16000020), (2, 8000010), (3, 5333340), (4, 4000005), (5, 3200004), (6, 2666670), (9, 1777780), (10, 1600002), (12, 1333335), (15, 1066668), (18, 888890), (20, 800001), (30, 533334), (36, 444445), (45, 355556), (60, 266667), (90, 177778), (103, 155340), (180, 88889), (206, 77670), (309, 51780), (412, 38835), (515, 31068), (618, 25890), (863, 18540), (927, 17260), (1030, 15534), (1236, 12945), (1545, 10356), (1726, 9270), (1854, 8630), (2060, 7767), (2589, 6180), (3090, 5178), (3452, 4635), (3708, 4315)]