19968676

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 46453176

約数和(自身を除く): 26484500

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 49, 52, 68, 91, 98, 119, 182, 196, 221, 238, 364, 442, 461, 476, 637, 833, 884, 922, 1274, 1547, 1666, 1844, 2548, 3094, 3227, 3332, 5993, 6188, 6454, 7837, 10829, 11986, 12908, 15674, 21658, 22589, 23972, 31348, 41951, 43316, 45178, 54859, 83902, 90356, 101881, 109718, 167804, 203762, 219436, 293657, 384013, 407524, 587314, 713167, 768026, 1174628, 1426334, 1536052, 2852668, 4992169, 9984338, 19968676]

約数ペア:

[(1, 19968676), (2, 9984338), (4, 4992169), (7, 2852668), (13, 1536052), (14, 1426334), (17, 1174628), (26, 768026), (28, 713167), (34, 587314), (49, 407524), (52, 384013), (68, 293657), (91, 219436), (98, 203762), (119, 167804), (182, 109718), (196, 101881), (221, 90356), (238, 83902), (364, 54859), (442, 45178), (461, 43316), (476, 41951), (637, 31348), (833, 23972), (884, 22589), (922, 21658), (1274, 15674), (1547, 12908), (1666, 11986), (1844, 10829), (2548, 7837), (3094, 6454), (3227, 6188), (3332, 5993)]