19990425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 42497280

約数和(自身を除く): 22506855

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 29, 35, 39, 65, 75, 87, 91, 101, 105, 145, 175, 195, 203, 273, 303, 325, 377, 435, 455, 505, 525, 609, 707, 725, 975, 1015, 1131, 1313, 1365, 1515, 1885, 2121, 2175, 2275, 2525, 2639, 2929, 3045, 3535, 3939, 5075, 5655, 6565, 6825, 7575, 7917, 8787, 9191, 9425, 10605, 13195, 14645, 15225, 17675, 19695, 20503, 27573, 28275, 32825, 38077, 39585, 43935, 45955, 53025, 61509, 65975, 73225, 98475, 102515, 114231, 137865, 190385, 197925, 219675, 229775, 266539, 307545, 512575, 571155, 689325, 799617, 951925, 1332695, 1537725, 2855775, 3998085, 6663475, 19990425]

約数ペア:

[(1, 19990425), (3, 6663475), (5, 3998085), (7, 2855775), (13, 1537725), (15, 1332695), (21, 951925), (25, 799617), (29, 689325), (35, 571155), (39, 512575), (65, 307545), (75, 266539), (87, 229775), (91, 219675), (101, 197925), (105, 190385), (145, 137865), (175, 114231), (195, 102515), (203, 98475), (273, 73225), (303, 65975), (325, 61509), (377, 53025), (435, 45955), (455, 43935), (505, 39585), (525, 38077), (609, 32825), (707, 28275), (725, 27573), (975, 20503), (1015, 19695), (1131, 17675), (1313, 15225), (1365, 14645), (1515, 13195), (1885, 10605), (2121, 9425), (2175, 9191), (2275, 8787), (2525, 7917), (2639, 7575), (2929, 6825), (3045, 6565), (3535, 5655), (3939, 5075)]