28731990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{379}}^1$

素因数の和:434

約数の個数: 96

約数和(自身を含む): 83393280

約数和(自身を除く): 54661290

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 361, 379, 399, 570, 665, 722, 758, 798, 1083, 1137, 1330, 1805, 1895, 1995, 2166, 2274, 2527, 2653, 3610, 3790, 3990, 5054, 5306, 5415, 5685, 7201, 7581, 7959, 10830, 11370, 12635, 13265, 14402, 15162, 15918, 21603, 25270, 26530, 36005, 37905, 39795, 43206, 50407, 72010, 75810, 79590, 100814, 108015, 136819, 151221, 216030, 252035, 273638, 302442, 410457, 504070, 684095, 756105, 820914, 957733, 1368190, 1512210, 1915466, 2052285, 2873199, 4104570, 4788665, 5746398, 9577330, 14365995, 28731990]

約数ペア:

[(1, 28731990), (2, 14365995), (3, 9577330), (5, 5746398), (6, 4788665), (7, 4104570), (10, 2873199), (14, 2052285), (15, 1915466), (19, 1512210), (21, 1368190), (30, 957733), (35, 820914), (38, 756105), (42, 684095), (57, 504070), (70, 410457), (95, 302442), (105, 273638), (114, 252035), (133, 216030), (190, 151221), (210, 136819), (266, 108015), (285, 100814), (361, 79590), (379, 75810), (399, 72010), (570, 50407), (665, 43206), (722, 39795), (758, 37905), (798, 36005), (1083, 26530), (1137, 25270), (1330, 21603), (1805, 15918), (1895, 15162), (1995, 14402), (2166, 13265), (2274, 12635), (2527, 11370), (2653, 10830), (3610, 7959), (3790, 7581), (3990, 7201), (5054, 5685), (5306, 5415)]