21448515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2131}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 38068992

約数和(自身を除く): 16620477

約数列:

[1, 3, 5, 11, 15, 33, 55, 61, 165, 183, 305, 671, 915, 2013, 2131, 3355, 6393, 10065, 10655, 23441, 31965, 70323, 117205, 129991, 351615, 389973, 649955, 1429901, 1949865, 4289703, 7149505, 21448515]

約数ペア:

[(1, 21448515), (3, 7149505), (5, 4289703), (11, 1949865), (15, 1429901), (33, 649955), (55, 389973), (61, 351615), (165, 129991), (183, 117205), (305, 70323), (671, 31965), (915, 23441), (2013, 10655), (2131, 10065), (3355, 6393)]