20702370

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{487}}^1$

素因数の和:619

約数の個数: 64

約数和(自身を含む): 54109440

約数和(自身を除く): 33407070

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 109, 130, 195, 218, 327, 390, 487, 545, 654, 974, 1090, 1417, 1461, 1635, 2435, 2834, 2922, 3270, 4251, 4870, 6331, 7085, 7305, 8502, 12662, 14170, 14610, 18993, 21255, 31655, 37986, 42510, 53083, 63310, 94965, 106166, 159249, 189930, 265415, 318498, 530830, 690079, 796245, 1380158, 1592490, 2070237, 3450395, 4140474, 6900790, 10351185, 20702370]

約数ペア:

[(1, 20702370), (2, 10351185), (3, 6900790), (5, 4140474), (6, 3450395), (10, 2070237), (13, 1592490), (15, 1380158), (26, 796245), (30, 690079), (39, 530830), (65, 318498), (78, 265415), (109, 189930), (130, 159249), (195, 106166), (218, 94965), (327, 63310), (390, 53083), (487, 42510), (545, 37986), (654, 31655), (974, 21255), (1090, 18993), (1417, 14610), (1461, 14170), (1635, 12662), (2435, 8502), (2834, 7305), (2922, 7085), (3270, 6331), (4251, 4870)]