21150900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:422

約数の個数: 108

約数和(自身を含む): 67433184

約数和(自身を除く): 46282284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 71, 75, 90, 100, 142, 150, 180, 213, 225, 284, 300, 331, 355, 426, 450, 639, 662, 710, 852, 900, 993, 1065, 1278, 1324, 1420, 1655, 1775, 1986, 2130, 2556, 2979, 3195, 3310, 3550, 3972, 4260, 4965, 5325, 5958, 6390, 6620, 7100, 8275, 9930, 10650, 11916, 12780, 14895, 15975, 16550, 19860, 21300, 23501, 24825, 29790, 31950, 33100, 47002, 49650, 59580, 63900, 70503, 74475, 94004, 99300, 117505, 141006, 148950, 211509, 235010, 282012, 297900, 352515, 423018, 470020, 587525, 705030, 846036, 1057545, 1175050, 1410060, 1762575, 2115090, 2350100, 3525150, 4230180, 5287725, 7050300, 10575450, 21150900]

約数ペア:

[(1, 21150900), (2, 10575450), (3, 7050300), (4, 5287725), (5, 4230180), (6, 3525150), (9, 2350100), (10, 2115090), (12, 1762575), (15, 1410060), (18, 1175050), (20, 1057545), (25, 846036), (30, 705030), (36, 587525), (45, 470020), (50, 423018), (60, 352515), (71, 297900), (75, 282012), (90, 235010), (100, 211509), (142, 148950), (150, 141006), (180, 117505), (213, 99300), (225, 94004), (284, 74475), (300, 70503), (331, 63900), (355, 59580), (426, 49650), (450, 47002), (639, 33100), (662, 31950), (710, 29790), (852, 24825), (900, 23501), (993, 21300), (1065, 19860), (1278, 16550), (1324, 15975), (1420, 14895), (1655, 12780), (1775, 11916), (1986, 10650), (2130, 9930), (2556, 8275), (2979, 7100), (3195, 6620), (3310, 6390), (3550, 5958), (3972, 5325), (4260, 4965)]