15398780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 33657120

約数和(自身を除く): 18258340

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 211, 356, 410, 422, 445, 820, 844, 890, 1055, 1780, 2110, 3649, 4220, 7298, 8651, 14596, 17302, 18245, 18779, 34604, 36490, 37558, 43255, 72980, 75116, 86510, 93895, 173020, 187790, 375580, 769939, 1539878, 3079756, 3849695, 7699390, 15398780]

約数ペア:

[(1, 15398780), (2, 7699390), (4, 3849695), (5, 3079756), (10, 1539878), (20, 769939), (41, 375580), (82, 187790), (89, 173020), (164, 93895), (178, 86510), (205, 75116), (211, 72980), (356, 43255), (410, 37558), (422, 36490), (445, 34604), (820, 18779), (844, 18245), (890, 17302), (1055, 14596), (1780, 8651), (2110, 7298), (3649, 4220)]