1921288325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 2784571776

約数和(自身を除く): 863283451

約数列:

[1, 5, 11, 23, 25, 47, 55, 115, 235, 253, 275, 281, 517, 529, 575, 1081, 1175, 1265, 1405, 2585, 2645, 3091, 5405, 5819, 6325, 6463, 7025, 11891, 12925, 13207, 13225, 15455, 24863, 27025, 29095, 32315, 59455, 66035, 71093, 77275, 124315, 145277, 145475, 148649, 161575, 273493, 297275, 303761, 330175, 355465, 621575, 726385, 743245, 1367465, 1518805, 1635139, 1777325, 3341371, 3631925, 3716225, 6837325, 6986503, 7594025, 8175695, 16706855, 34932515, 40878475, 76851533, 83534275, 174662575, 384257665, 1921288325]

約数ペア:

[(1, 1921288325), (5, 384257665), (11, 174662575), (23, 83534275), (25, 76851533), (47, 40878475), (55, 34932515), (115, 16706855), (235, 8175695), (253, 7594025), (275, 6986503), (281, 6837325), (517, 3716225), (529, 3631925), (575, 3341371), (1081, 1777325), (1175, 1635139), (1265, 1518805), (1405, 1367465), (2585, 743245), (2645, 726385), (3091, 621575), (5405, 355465), (5819, 330175), (6325, 303761), (6463, 297275), (7025, 273493), (11891, 161575), (12925, 148649), (13207, 145475), (13225, 145277), (15455, 124315), (24863, 77275), (27025, 71093), (29095, 66035), (32315, 59455)]