21532156940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^2\times {\mathrm{4129}}^1$

素因数の和:4531

約数の個数: 72

約数和(自身を含む): 51958902240

約数和(自身を除く): 30426745300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 386, 772, 965, 1351, 1930, 2702, 3860, 4129, 5404, 6755, 8258, 13510, 16516, 20645, 27020, 28903, 37249, 41290, 57806, 74498, 82580, 115612, 144515, 148996, 186245, 260743, 289030, 372490, 521486, 578060, 744980, 796897, 1042972, 1303715, 1593794, 2607430, 3187588, 3984485, 5214860, 5578279, 7968970, 11156558, 15937940, 22313116, 27891395, 55782790, 111565580, 153801121, 307602242, 615204484, 769005605, 1076607847, 1538011210, 2153215694, 3076022420, 4306431388, 5383039235, 10766078470, 21532156940]

約数ペア:

[(1, 21532156940), (2, 10766078470), (4, 5383039235), (5, 4306431388), (7, 3076022420), (10, 2153215694), (14, 1538011210), (20, 1076607847), (28, 769005605), (35, 615204484), (70, 307602242), (140, 153801121), (193, 111565580), (386, 55782790), (772, 27891395), (965, 22313116), (1351, 15937940), (1930, 11156558), (2702, 7968970), (3860, 5578279), (4129, 5214860), (5404, 3984485), (6755, 3187588), (8258, 2607430), (13510, 1593794), (16516, 1303715), (20645, 1042972), (27020, 796897), (28903, 744980), (37249, 578060), (41290, 521486), (57806, 372490), (74498, 289030), (82580, 260743), (115612, 186245), (144515, 148996)]