20504516

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 40061952

約数和(自身を除く): 19557436

約数列:

[1, 2, 4, 17, 31, 34, 62, 68, 71, 124, 137, 142, 274, 284, 527, 548, 1054, 1207, 2108, 2201, 2329, 2414, 4247, 4402, 4658, 4828, 8494, 8804, 9316, 9727, 16988, 19454, 37417, 38908, 72199, 74834, 144398, 149668, 165359, 288796, 301537, 330718, 603074, 661436, 1206148, 5126129, 10252258, 20504516]

約数ペア:

[(1, 20504516), (2, 10252258), (4, 5126129), (17, 1206148), (31, 661436), (34, 603074), (62, 330718), (68, 301537), (71, 288796), (124, 165359), (137, 149668), (142, 144398), (274, 74834), (284, 72199), (527, 38908), (548, 37417), (1054, 19454), (1207, 16988), (2108, 9727), (2201, 9316), (2329, 8804), (2414, 8494), (4247, 4828), (4402, 4658)]