21359895

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{503}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 14928105

約数列:

[1, 3, 5, 15, 19, 57, 95, 149, 285, 447, 503, 745, 1509, 2235, 2515, 2831, 7545, 8493, 9557, 14155, 28671, 42465, 47785, 74947, 143355, 224841, 374735, 1124205, 1423993, 4271979, 7119965, 21359895]

約数ペア:

[(1, 21359895), (3, 7119965), (5, 4271979), (15, 1423993), (19, 1124205), (57, 374735), (95, 224841), (149, 143355), (285, 74947), (447, 47785), (503, 42465), (745, 28671), (1509, 14155), (2235, 9557), (2515, 8493), (2831, 7545)]