19865860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{491}}^1$

素因数の和:541

約数の個数: 72

約数和(自身を含む): 50750784

約数和(自身を除く): 30884924

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 491, 578, 595, 982, 1156, 1190, 1445, 1964, 2023, 2380, 2455, 2890, 3437, 4046, 4910, 5780, 6874, 8092, 8347, 9820, 10115, 13748, 16694, 17185, 20230, 33388, 34370, 40460, 41735, 58429, 68740, 83470, 116858, 141899, 166940, 233716, 283798, 292145, 567596, 584290, 709495, 993293, 1168580, 1418990, 1986586, 2837980, 3973172, 4966465, 9932930, 19865860]

約数ペア:

[(1, 19865860), (2, 9932930), (4, 4966465), (5, 3973172), (7, 2837980), (10, 1986586), (14, 1418990), (17, 1168580), (20, 993293), (28, 709495), (34, 584290), (35, 567596), (68, 292145), (70, 283798), (85, 233716), (119, 166940), (140, 141899), (170, 116858), (238, 83470), (289, 68740), (340, 58429), (476, 41735), (491, 40460), (578, 34370), (595, 33388), (982, 20230), (1156, 17185), (1190, 16694), (1445, 13748), (1964, 10115), (2023, 9820), (2380, 8347), (2455, 8092), (2890, 6874), (3437, 5780), (4046, 4910)]