28213900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1973}}^1$

素因数の和:2011

約数の個数: 72

約数和(自身を含む): 71964144

約数和(自身を除く): 43750244

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1430, 1973, 2860, 3575, 3946, 7150, 7892, 9865, 14300, 19730, 21703, 25649, 39460, 43406, 49325, 51298, 86812, 98650, 102596, 108515, 128245, 197300, 217030, 256490, 282139, 434060, 512980, 542575, 564278, 641225, 1085150, 1128556, 1282450, 1410695, 2170300, 2564900, 2821390, 5642780, 7053475, 14106950, 28213900]

約数ペア:

[(1, 28213900), (2, 14106950), (4, 7053475), (5, 5642780), (10, 2821390), (11, 2564900), (13, 2170300), (20, 1410695), (22, 1282450), (25, 1128556), (26, 1085150), (44, 641225), (50, 564278), (52, 542575), (55, 512980), (65, 434060), (100, 282139), (110, 256490), (130, 217030), (143, 197300), (220, 128245), (260, 108515), (275, 102596), (286, 98650), (325, 86812), (550, 51298), (572, 49325), (650, 43406), (715, 39460), (1100, 25649), (1300, 21703), (1430, 19730), (1973, 14300), (2860, 9865), (3575, 7892), (3946, 7150)]