19289420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 41851488

約数和(自身を除く): 22562068

約数列:

[1, 2, 4, 5, 10, 20, 61, 97, 122, 163, 194, 244, 305, 326, 388, 485, 610, 652, 815, 970, 1220, 1630, 1940, 3260, 5917, 9943, 11834, 15811, 19886, 23668, 29585, 31622, 39772, 49715, 59170, 63244, 79055, 99430, 118340, 158110, 198860, 316220, 964471, 1928942, 3857884, 4822355, 9644710, 19289420]

約数ペア:

[(1, 19289420), (2, 9644710), (4, 4822355), (5, 3857884), (10, 1928942), (20, 964471), (61, 316220), (97, 198860), (122, 158110), (163, 118340), (194, 99430), (244, 79055), (305, 63244), (326, 59170), (388, 49715), (485, 39772), (610, 31622), (652, 29585), (815, 23668), (970, 19886), (1220, 15811), (1630, 11834), (1940, 9943), (3260, 5917)]