28493283

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 21503517

約数列:

[1, 3, 7, 13, 21, 29, 39, 59, 61, 87, 91, 177, 183, 203, 273, 377, 413, 427, 609, 767, 793, 1131, 1239, 1281, 1711, 1769, 2301, 2379, 2639, 3599, 5133, 5307, 5369, 5551, 7917, 10797, 11977, 12383, 16107, 16653, 22243, 22997, 25193, 35931, 37149, 46787, 66729, 68991, 75579, 104371, 140361, 155701, 160979, 313113, 327509, 467103, 482937, 730597, 982527, 1356823, 2191791, 4070469, 9497761, 28493283]

約数ペア:

[(1, 28493283), (3, 9497761), (7, 4070469), (13, 2191791), (21, 1356823), (29, 982527), (39, 730597), (59, 482937), (61, 467103), (87, 327509), (91, 313113), (177, 160979), (183, 155701), (203, 140361), (273, 104371), (377, 75579), (413, 68991), (427, 66729), (609, 46787), (767, 37149), (793, 35931), (1131, 25193), (1239, 22997), (1281, 22243), (1711, 16653), (1769, 16107), (2301, 12383), (2379, 11977), (2639, 10797), (3599, 7917), (5133, 5551), (5307, 5369)]