21225440

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2503}}^1$

素因数の和:2571

約数の個数: 48

約数和(自身を含む): 51111648

約数和(自身を除く): 29886208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2503, 4240, 5006, 8480, 10012, 12515, 20024, 25030, 40048, 50060, 80096, 100120, 132659, 200240, 265318, 400480, 530636, 663295, 1061272, 1326590, 2122544, 2653180, 4245088, 5306360, 10612720, 21225440]

約数ペア:

[(1, 21225440), (2, 10612720), (4, 5306360), (5, 4245088), (8, 2653180), (10, 2122544), (16, 1326590), (20, 1061272), (32, 663295), (40, 530636), (53, 400480), (80, 265318), (106, 200240), (160, 132659), (212, 100120), (265, 80096), (424, 50060), (530, 40048), (848, 25030), (1060, 20024), (1696, 12515), (2120, 10012), (2503, 8480), (4240, 5006)]