688636

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:94

約数の個数: 48

約数和(自身を含む): 1481760

約数和(自身を除く): 793124

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 41, 52, 68, 76, 82, 164, 221, 247, 323, 442, 494, 533, 646, 697, 779, 884, 988, 1066, 1292, 1394, 1558, 2132, 2788, 3116, 4199, 8398, 9061, 10127, 13243, 16796, 18122, 20254, 26486, 36244, 40508, 52972, 172159, 344318, 688636]

約数ペア:

[(1, 688636), (2, 344318), (4, 172159), (13, 52972), (17, 40508), (19, 36244), (26, 26486), (34, 20254), (38, 18122), (41, 16796), (52, 13243), (68, 10127), (76, 9061), (82, 8398), (164, 4199), (221, 3116), (247, 2788), (323, 2132), (442, 1558), (494, 1394), (533, 1292), (646, 1066), (697, 988), (779, 884)]