311886540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{247529}}^1$

素因数の和:247551

約数の個数: 72

約数和(自身を含む): 1081211040

約数和(自身を除く): 769324500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 247529, 495058, 742587, 990116, 1237645, 1485174, 1732703, 2227761, 2475290, 2970348, 3465406, 3712935, 4455522, 4950580, 5198109, 6930812, 7425870, 8663515, 8911044, 10396218, 11138805, 14851740, 15594327, 17327030, 20792436, 22277610, 25990545, 31188654, 34654060, 44555220, 51981090, 62377308, 77971635, 103962180, 155943270, 311886540]

約数ペア:

[(1, 311886540), (2, 155943270), (3, 103962180), (4, 77971635), (5, 62377308), (6, 51981090), (7, 44555220), (9, 34654060), (10, 31188654), (12, 25990545), (14, 22277610), (15, 20792436), (18, 17327030), (20, 15594327), (21, 14851740), (28, 11138805), (30, 10396218), (35, 8911044), (36, 8663515), (42, 7425870), (45, 6930812), (60, 5198109), (63, 4950580), (70, 4455522), (84, 3712935), (90, 3465406), (105, 2970348), (126, 2475290), (140, 2227761), (180, 1732703), (210, 1485174), (252, 1237645), (315, 990116), (420, 742587), (630, 495058), (1260, 247529)]