28907788

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 64562400

約数和(自身を除く): 35654612

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 41, 52, 82, 91, 149, 164, 169, 182, 287, 298, 338, 364, 533, 574, 596, 676, 1043, 1066, 1148, 1183, 1937, 2086, 2132, 2366, 3731, 3874, 4172, 4732, 6109, 6929, 7462, 7748, 12218, 13559, 13858, 14924, 24436, 25181, 27118, 27716, 42763, 48503, 50362, 54236, 79417, 85526, 97006, 100724, 158834, 171052, 176267, 194012, 317668, 352534, 555919, 705068, 1032421, 1111838, 2064842, 2223676, 4129684, 7226947, 14453894, 28907788]

約数ペア:

[(1, 28907788), (2, 14453894), (4, 7226947), (7, 4129684), (13, 2223676), (14, 2064842), (26, 1111838), (28, 1032421), (41, 705068), (52, 555919), (82, 352534), (91, 317668), (149, 194012), (164, 176267), (169, 171052), (182, 158834), (287, 100724), (298, 97006), (338, 85526), (364, 79417), (533, 54236), (574, 50362), (596, 48503), (676, 42763), (1043, 27716), (1066, 27118), (1148, 25181), (1183, 24436), (1937, 14924), (2086, 13858), (2132, 13559), (2366, 12218), (3731, 7748), (3874, 7462), (4172, 6929), (4732, 6109)]