12978460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 31102848

約数和(自身を除く): 18124388

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 173, 220, 242, 310, 341, 346, 484, 605, 620, 682, 692, 865, 1210, 1364, 1705, 1730, 1903, 2420, 3410, 3460, 3751, 3806, 5363, 6820, 7502, 7612, 9515, 10726, 15004, 18755, 19030, 20933, 21452, 26815, 37510, 38060, 41866, 53630, 58993, 75020, 83732, 104665, 107260, 117986, 209330, 235972, 294965, 418660, 589930, 648923, 1179860, 1297846, 2595692, 3244615, 6489230, 12978460]

約数ペア:

[(1, 12978460), (2, 6489230), (4, 3244615), (5, 2595692), (10, 1297846), (11, 1179860), (20, 648923), (22, 589930), (31, 418660), (44, 294965), (55, 235972), (62, 209330), (110, 117986), (121, 107260), (124, 104665), (155, 83732), (173, 75020), (220, 58993), (242, 53630), (310, 41866), (341, 38060), (346, 37510), (484, 26815), (605, 21452), (620, 20933), (682, 19030), (692, 18755), (865, 15004), (1210, 10726), (1364, 9515), (1705, 7612), (1730, 7502), (1903, 6820), (2420, 5363), (3410, 3806), (3460, 3751)]