1371280

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 3252024

約数和(自身を除く): 1880744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 281, 305, 488, 562, 610, 976, 1124, 1220, 1405, 2248, 2440, 2810, 4496, 4880, 5620, 11240, 17141, 22480, 34282, 68564, 85705, 137128, 171410, 274256, 342820, 685640, 1371280]

約数ペア:

[(1, 1371280), (2, 685640), (4, 342820), (5, 274256), (8, 171410), (10, 137128), (16, 85705), (20, 68564), (40, 34282), (61, 22480), (80, 17141), (122, 11240), (244, 5620), (281, 4880), (305, 4496), (488, 2810), (562, 2440), (610, 2248), (976, 1405), (1124, 1220)]