216580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:53

約数の個数: 72

約数和(自身を含む): 603288

約数和(自身を除く): 386708

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 49, 52, 65, 68, 70, 85, 91, 98, 119, 130, 140, 170, 182, 196, 221, 238, 245, 260, 340, 364, 442, 455, 476, 490, 595, 637, 833, 884, 910, 980, 1105, 1190, 1274, 1547, 1666, 1820, 2210, 2380, 2548, 3094, 3185, 3332, 4165, 4420, 6188, 6370, 7735, 8330, 10829, 12740, 15470, 16660, 21658, 30940, 43316, 54145, 108290, 216580]

約数ペア:

[(1, 216580), (2, 108290), (4, 54145), (5, 43316), (7, 30940), (10, 21658), (13, 16660), (14, 15470), (17, 12740), (20, 10829), (26, 8330), (28, 7735), (34, 6370), (35, 6188), (49, 4420), (52, 4165), (65, 3332), (68, 3185), (70, 3094), (85, 2548), (91, 2380), (98, 2210), (119, 1820), (130, 1666), (140, 1547), (170, 1274), (182, 1190), (196, 1105), (221, 980), (238, 910), (245, 884), (260, 833), (340, 637), (364, 595), (442, 490), (455, 476)]