15681920

素因数分解:

$2^7\times 5^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 38005200

約数和(自身を除く): 22323280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 229, 320, 428, 458, 535, 640, 856, 916, 1070, 1145, 1712, 1832, 2140, 2290, 3424, 3664, 4280, 4580, 6848, 7328, 8560, 9160, 13696, 14656, 17120, 18320, 24503, 29312, 34240, 36640, 49006, 68480, 73280, 98012, 122515, 146560, 196024, 245030, 392048, 490060, 784096, 980120, 1568192, 1960240, 3136384, 3920480, 7840960, 15681920]

約数ペア:

[(1, 15681920), (2, 7840960), (4, 3920480), (5, 3136384), (8, 1960240), (10, 1568192), (16, 980120), (20, 784096), (32, 490060), (40, 392048), (64, 245030), (80, 196024), (107, 146560), (128, 122515), (160, 98012), (214, 73280), (229, 68480), (320, 49006), (428, 36640), (458, 34240), (535, 29312), (640, 24503), (856, 18320), (916, 17120), (1070, 14656), (1145, 13696), (1712, 9160), (1832, 8560), (2140, 7328), (2290, 6848), (3424, 4580), (3664, 4280)]