31215860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:201

約数の個数: 96

約数和(自身を含む): 76204800

約数和(自身を除く): 44988940

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 71, 76, 89, 95, 130, 142, 178, 190, 247, 260, 284, 355, 356, 380, 445, 494, 710, 890, 923, 988, 1157, 1235, 1349, 1420, 1691, 1780, 1846, 2314, 2470, 2698, 3382, 3692, 4615, 4628, 4940, 5396, 5785, 6319, 6745, 6764, 8455, 9230, 11570, 12638, 13490, 16910, 17537, 18460, 21983, 23140, 25276, 26980, 31595, 33820, 35074, 43966, 63190, 70148, 82147, 87685, 87932, 109915, 120061, 126380, 164294, 175370, 219830, 240122, 328588, 350740, 410735, 439660, 480244, 600305, 821470, 1200610, 1560793, 1642940, 2401220, 3121586, 6243172, 7803965, 15607930, 31215860]

約数ペア:

[(1, 31215860), (2, 15607930), (4, 7803965), (5, 6243172), (10, 3121586), (13, 2401220), (19, 1642940), (20, 1560793), (26, 1200610), (38, 821470), (52, 600305), (65, 480244), (71, 439660), (76, 410735), (89, 350740), (95, 328588), (130, 240122), (142, 219830), (178, 175370), (190, 164294), (247, 126380), (260, 120061), (284, 109915), (355, 87932), (356, 87685), (380, 82147), (445, 70148), (494, 63190), (710, 43966), (890, 35074), (923, 33820), (988, 31595), (1157, 26980), (1235, 25276), (1349, 23140), (1420, 21983), (1691, 18460), (1780, 17537), (1846, 16910), (2314, 13490), (2470, 12638), (2698, 11570), (3382, 9230), (3692, 8455), (4615, 6764), (4628, 6745), (4940, 6319), (5396, 5785)]