28273900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1$

素因数の和:703

約数の個数: 72

約数和(自身を含む): 67495680

約数和(自身を除く): 39221780

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 50, 76, 92, 95, 100, 115, 190, 230, 380, 437, 460, 475, 575, 647, 874, 950, 1150, 1294, 1748, 1900, 2185, 2300, 2588, 3235, 4370, 6470, 8740, 10925, 12293, 12940, 14881, 16175, 21850, 24586, 29762, 32350, 43700, 49172, 59524, 61465, 64700, 74405, 122930, 148810, 245860, 282739, 297620, 307325, 372025, 565478, 614650, 744050, 1130956, 1229300, 1413695, 1488100, 2827390, 5654780, 7068475, 14136950, 28273900]

約数ペア:

[(1, 28273900), (2, 14136950), (4, 7068475), (5, 5654780), (10, 2827390), (19, 1488100), (20, 1413695), (23, 1229300), (25, 1130956), (38, 744050), (46, 614650), (50, 565478), (76, 372025), (92, 307325), (95, 297620), (100, 282739), (115, 245860), (190, 148810), (230, 122930), (380, 74405), (437, 64700), (460, 61465), (475, 59524), (575, 49172), (647, 43700), (874, 32350), (950, 29762), (1150, 24586), (1294, 21850), (1748, 16175), (1900, 14881), (2185, 12940), (2300, 12293), (2588, 10925), (3235, 8740), (4370, 6470)]