21099900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1153}}^1$

素因数の和:1231

約数の個数: 72

約数和(自身を含む): 62103664

約数和(自身を除く): 41003764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 61, 75, 100, 122, 150, 183, 244, 300, 305, 366, 610, 732, 915, 1153, 1220, 1525, 1830, 2306, 3050, 3459, 3660, 4575, 4612, 5765, 6100, 6918, 9150, 11530, 13836, 17295, 18300, 23060, 28825, 34590, 57650, 69180, 70333, 86475, 115300, 140666, 172950, 210999, 281332, 345900, 351665, 421998, 703330, 843996, 1054995, 1406660, 1758325, 2109990, 3516650, 4219980, 5274975, 7033300, 10549950, 21099900]

約数ペア:

[(1, 21099900), (2, 10549950), (3, 7033300), (4, 5274975), (5, 4219980), (6, 3516650), (10, 2109990), (12, 1758325), (15, 1406660), (20, 1054995), (25, 843996), (30, 703330), (50, 421998), (60, 351665), (61, 345900), (75, 281332), (100, 210999), (122, 172950), (150, 140666), (183, 115300), (244, 86475), (300, 70333), (305, 69180), (366, 57650), (610, 34590), (732, 28825), (915, 23060), (1153, 18300), (1220, 17295), (1525, 13836), (1830, 11530), (2306, 9150), (3050, 6918), (3459, 6100), (3660, 5765), (4575, 4612)]