18743725

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 32060448

約数和(自身を除く): 13316723

約数列:

[1, 5, 7, 11, 13, 25, 35, 49, 55, 65, 77, 91, 107, 143, 175, 245, 275, 325, 385, 455, 535, 539, 637, 715, 749, 1001, 1177, 1225, 1391, 1925, 2275, 2675, 2695, 3185, 3575, 3745, 5005, 5243, 5885, 6955, 7007, 8239, 9737, 13475, 15301, 15925, 18725, 25025, 26215, 29425, 34775, 35035, 41195, 48685, 57673, 68159, 76505, 107107, 131075, 175175, 205975, 243425, 288365, 340795, 382525, 535535, 749749, 1441825, 1703975, 2677675, 3748745, 18743725]

約数ペア:

[(1, 18743725), (5, 3748745), (7, 2677675), (11, 1703975), (13, 1441825), (25, 749749), (35, 535535), (49, 382525), (55, 340795), (65, 288365), (77, 243425), (91, 205975), (107, 175175), (143, 131075), (175, 107107), (245, 76505), (275, 68159), (325, 57673), (385, 48685), (455, 41195), (535, 35035), (539, 34775), (637, 29425), (715, 26215), (749, 25025), (1001, 18725), (1177, 15925), (1225, 15301), (1391, 13475), (1925, 9737), (2275, 8239), (2675, 7007), (2695, 6955), (3185, 5885), (3575, 5243), (3745, 5005)]