21900795

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{359}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19467525

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 83, 105, 147, 245, 249, 359, 415, 581, 735, 1077, 1245, 1743, 1795, 2513, 2905, 4067, 5385, 7539, 8715, 12201, 12565, 17591, 20335, 29797, 37695, 52773, 61005, 87955, 89391, 148985, 208579, 263865, 446955, 625737, 1042895, 1460053, 3128685, 4380159, 7300265, 21900795]

約数ペア:

[(1, 21900795), (3, 7300265), (5, 4380159), (7, 3128685), (15, 1460053), (21, 1042895), (35, 625737), (49, 446955), (83, 263865), (105, 208579), (147, 148985), (245, 89391), (249, 87955), (359, 61005), (415, 52773), (581, 37695), (735, 29797), (1077, 20335), (1245, 17591), (1743, 12565), (1795, 12201), (2513, 8715), (2905, 7539), (4067, 5385)]