19488664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 42517440

約数和(自身を除く): 23028776

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 73, 104, 136, 146, 151, 221, 292, 302, 442, 584, 604, 884, 949, 1208, 1241, 1768, 1898, 1963, 2482, 2567, 3796, 3926, 4964, 5134, 7592, 7852, 9928, 10268, 11023, 15704, 16133, 20536, 22046, 32266, 33371, 44092, 64532, 66742, 88184, 129064, 133484, 143299, 187391, 266968, 286598, 374782, 573196, 749564, 1146392, 1499128, 2436083, 4872166, 9744332, 19488664]

約数ペア:

[(1, 19488664), (2, 9744332), (4, 4872166), (8, 2436083), (13, 1499128), (17, 1146392), (26, 749564), (34, 573196), (52, 374782), (68, 286598), (73, 266968), (104, 187391), (136, 143299), (146, 133484), (151, 129064), (221, 88184), (292, 66742), (302, 64532), (442, 44092), (584, 33371), (604, 32266), (884, 22046), (949, 20536), (1208, 16133), (1241, 15704), (1768, 11023), (1898, 10268), (1963, 9928), (2482, 7852), (2567, 7592), (3796, 5134), (3926, 4964)]