209909308

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{269}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 450424800

約数和(自身を除く): 240515492

約数列:

[1, 2, 4, 7, 14, 28, 29, 31, 58, 62, 116, 124, 203, 217, 269, 406, 434, 538, 812, 868, 899, 961, 1076, 1798, 1883, 1922, 3596, 3766, 3844, 6293, 6727, 7532, 7801, 8339, 12586, 13454, 15602, 16678, 25172, 26908, 27869, 31204, 33356, 54607, 55738, 58373, 109214, 111476, 116746, 195083, 218428, 233492, 241831, 258509, 390166, 483662, 517018, 780332, 967324, 1034036, 1692817, 1809563, 3385634, 3619126, 6771268, 7238252, 7496761, 14993522, 29987044, 52477327, 104954654, 209909308]

約数ペア:

[(1, 209909308), (2, 104954654), (4, 52477327), (7, 29987044), (14, 14993522), (28, 7496761), (29, 7238252), (31, 6771268), (58, 3619126), (62, 3385634), (116, 1809563), (124, 1692817), (203, 1034036), (217, 967324), (269, 780332), (406, 517018), (434, 483662), (538, 390166), (812, 258509), (868, 241831), (899, 233492), (961, 218428), (1076, 195083), (1798, 116746), (1883, 111476), (1922, 109214), (3596, 58373), (3766, 55738), (3844, 54607), (6293, 33356), (6727, 31204), (7532, 27869), (7801, 26908), (8339, 25172), (12586, 16678), (13454, 15602)]