18733715

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 31933440

約数和(自身を除く): 13199725

約数列:

[1, 5, 7, 11, 13, 19, 35, 55, 65, 77, 91, 95, 133, 143, 197, 209, 247, 385, 455, 665, 715, 985, 1001, 1045, 1235, 1379, 1463, 1729, 2167, 2561, 2717, 3743, 5005, 6895, 7315, 8645, 10835, 12805, 13585, 15169, 17927, 18715, 19019, 26201, 28171, 41173, 48659, 75845, 89635, 95095, 131005, 140855, 197197, 205865, 243295, 288211, 340613, 535249, 985985, 1441055, 1703065, 2676245, 3746743, 18733715]

約数ペア:

[(1, 18733715), (5, 3746743), (7, 2676245), (11, 1703065), (13, 1441055), (19, 985985), (35, 535249), (55, 340613), (65, 288211), (77, 243295), (91, 205865), (95, 197197), (133, 140855), (143, 131005), (197, 95095), (209, 89635), (247, 75845), (385, 48659), (455, 41173), (665, 28171), (715, 26201), (985, 19019), (1001, 18715), (1045, 17927), (1235, 15169), (1379, 13585), (1463, 12805), (1729, 10835), (2167, 8645), (2561, 7315), (2717, 6895), (3743, 5005)]