21942112

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24022688

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 151, 152, 239, 302, 304, 478, 604, 608, 956, 1208, 1912, 2416, 2869, 3824, 4541, 4832, 5738, 7648, 9082, 11476, 18164, 22952, 36089, 36328, 45904, 72178, 72656, 91808, 144356, 145312, 288712, 577424, 685691, 1154848, 1371382, 2742764, 5485528, 10971056, 21942112]

約数ペア:

[(1, 21942112), (2, 10971056), (4, 5485528), (8, 2742764), (16, 1371382), (19, 1154848), (32, 685691), (38, 577424), (76, 288712), (151, 145312), (152, 144356), (239, 91808), (302, 72656), (304, 72178), (478, 45904), (604, 36328), (608, 36089), (956, 22952), (1208, 18164), (1912, 11476), (2416, 9082), (2869, 7648), (3824, 5738), (4541, 4832)]