19964516

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 43794240

約数和(自身を除く): 23829724

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 121, 143, 167, 209, 242, 247, 286, 334, 418, 484, 494, 572, 668, 836, 988, 1573, 1837, 2171, 2299, 2717, 3146, 3173, 3674, 4342, 4598, 5434, 6292, 6346, 7348, 8684, 9196, 10868, 12692, 20207, 23881, 29887, 34903, 40414, 41249, 47762, 59774, 69806, 80828, 82498, 95524, 119548, 139612, 164996, 262691, 383933, 453739, 525382, 767866, 907478, 1050764, 1535732, 1814956, 4991129, 9982258, 19964516]

約数ペア:

[(1, 19964516), (2, 9982258), (4, 4991129), (11, 1814956), (13, 1535732), (19, 1050764), (22, 907478), (26, 767866), (38, 525382), (44, 453739), (52, 383933), (76, 262691), (121, 164996), (143, 139612), (167, 119548), (209, 95524), (242, 82498), (247, 80828), (286, 69806), (334, 59774), (418, 47762), (484, 41249), (494, 40414), (572, 34903), (668, 29887), (836, 23881), (988, 20207), (1573, 12692), (1837, 10868), (2171, 9196), (2299, 8684), (2717, 7348), (3146, 6346), (3173, 6292), (3674, 5434), (4342, 4598)]