19876450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:603

約数の個数: 48

約数和(自身を含む): 40979520

約数和(自身を除く): 21103070

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 71, 110, 142, 275, 355, 509, 550, 710, 781, 1018, 1562, 1775, 2545, 3550, 3905, 5090, 5599, 7810, 11198, 12725, 19525, 25450, 27995, 36139, 39050, 55990, 72278, 139975, 180695, 279950, 361390, 397529, 795058, 903475, 1806950, 1987645, 3975290, 9938225, 19876450]

約数ペア:

[(1, 19876450), (2, 9938225), (5, 3975290), (10, 1987645), (11, 1806950), (22, 903475), (25, 795058), (50, 397529), (55, 361390), (71, 279950), (110, 180695), (142, 139975), (275, 72278), (355, 55990), (509, 39050), (550, 36139), (710, 27995), (781, 25450), (1018, 19525), (1562, 12725), (1775, 11198), (2545, 7810), (3550, 5599), (3905, 5090)]