639643788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61909}}^1$

素因数の和:61967

約数の個数: 72

約数和(自身を含む): 1892960160

約数和(自身を除く): 1253316372

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 41, 42, 63, 82, 84, 123, 126, 164, 246, 252, 287, 369, 492, 574, 738, 861, 1148, 1476, 1722, 2583, 3444, 5166, 10332, 61909, 123818, 185727, 247636, 371454, 433363, 557181, 742908, 866726, 1114362, 1300089, 1733452, 2228724, 2538269, 2600178, 3900267, 5076538, 5200356, 7614807, 7800534, 10153076, 15229614, 15601068, 17767883, 22844421, 30459228, 35535766, 45688842, 53303649, 71071532, 91377684, 106607298, 159910947, 213214596, 319821894, 639643788]

約数ペア:

[(1, 639643788), (2, 319821894), (3, 213214596), (4, 159910947), (6, 106607298), (7, 91377684), (9, 71071532), (12, 53303649), (14, 45688842), (18, 35535766), (21, 30459228), (28, 22844421), (36, 17767883), (41, 15601068), (42, 15229614), (63, 10153076), (82, 7800534), (84, 7614807), (123, 5200356), (126, 5076538), (164, 3900267), (246, 2600178), (252, 2538269), (287, 2228724), (369, 1733452), (492, 1300089), (574, 1114362), (738, 866726), (861, 742908), (1148, 557181), (1476, 433363), (1722, 371454), (2583, 247636), (3444, 185727), (5166, 123818), (10332, 61909)]