28888785

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 54604800

約数和(自身を除く): 25716015

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 47, 87, 135, 141, 145, 157, 235, 261, 423, 435, 471, 705, 783, 785, 1269, 1305, 1363, 1413, 2115, 2355, 3915, 4089, 4239, 4553, 6345, 6815, 7065, 7379, 12267, 13659, 20445, 21195, 22137, 22765, 36801, 36895, 40977, 61335, 66411, 68295, 110685, 122931, 184005, 199233, 204885, 213991, 332055, 614655, 641973, 996165, 1069955, 1925919, 3209865, 5777757, 9629595, 28888785]

約数ペア:

[(1, 28888785), (3, 9629595), (5, 5777757), (9, 3209865), (15, 1925919), (27, 1069955), (29, 996165), (45, 641973), (47, 614655), (87, 332055), (135, 213991), (141, 204885), (145, 199233), (157, 184005), (235, 122931), (261, 110685), (423, 68295), (435, 66411), (471, 61335), (705, 40977), (783, 36895), (785, 36801), (1269, 22765), (1305, 22137), (1363, 21195), (1413, 20445), (2115, 13659), (2355, 12267), (3915, 7379), (4089, 7065), (4239, 6815), (4553, 6345)]