78460640

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8039}}^1$

素因数の和:8115

約数の個数: 48

約数和(自身を含む): 188425440

約数和(自身を除く): 109964800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2440, 4880, 8039, 9760, 16078, 32156, 40195, 64312, 80390, 128624, 160780, 257248, 321560, 490379, 643120, 980758, 1286240, 1961516, 2451895, 3923032, 4903790, 7846064, 9807580, 15692128, 19615160, 39230320, 78460640]

約数ペア:

[(1, 78460640), (2, 39230320), (4, 19615160), (5, 15692128), (8, 9807580), (10, 7846064), (16, 4903790), (20, 3923032), (32, 2451895), (40, 1961516), (61, 1286240), (80, 980758), (122, 643120), (160, 490379), (244, 321560), (305, 257248), (488, 160780), (610, 128624), (976, 80390), (1220, 64312), (1952, 40195), (2440, 32156), (4880, 16078), (8039, 9760)]