19529900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 46444944

約数和(自身を除く): 26915044

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 83, 100, 130, 166, 181, 260, 325, 332, 362, 415, 650, 724, 830, 905, 1079, 1300, 1660, 1810, 2075, 2158, 2353, 3620, 4150, 4316, 4525, 4706, 5395, 8300, 9050, 9412, 10790, 11765, 15023, 18100, 21580, 23530, 26975, 30046, 47060, 53950, 58825, 60092, 75115, 107900, 117650, 150230, 195299, 235300, 300460, 375575, 390598, 751150, 781196, 976495, 1502300, 1952990, 3905980, 4882475, 9764950, 19529900]

約数ペア:

[(1, 19529900), (2, 9764950), (4, 4882475), (5, 3905980), (10, 1952990), (13, 1502300), (20, 976495), (25, 781196), (26, 751150), (50, 390598), (52, 375575), (65, 300460), (83, 235300), (100, 195299), (130, 150230), (166, 117650), (181, 107900), (260, 75115), (325, 60092), (332, 58825), (362, 53950), (415, 47060), (650, 30046), (724, 26975), (830, 23530), (905, 21580), (1079, 18100), (1300, 15023), (1660, 11765), (1810, 10790), (2075, 9412), (2158, 9050), (2353, 8300), (3620, 5395), (4150, 4706), (4316, 4525)]