18408885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 34283520

約数和(自身を除く): 15874635

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 59, 61, 93, 155, 165, 177, 183, 295, 305, 341, 465, 649, 671, 885, 915, 1023, 1705, 1829, 1891, 1947, 2013, 3245, 3355, 3599, 5115, 5487, 5673, 9145, 9455, 9735, 10065, 10797, 17995, 20119, 20801, 27435, 28365, 39589, 53985, 60357, 62403, 100595, 104005, 111569, 118767, 197945, 301785, 312015, 334707, 557845, 593835, 1227259, 1673535, 3681777, 6136295, 18408885]

約数ペア:

[(1, 18408885), (3, 6136295), (5, 3681777), (11, 1673535), (15, 1227259), (31, 593835), (33, 557845), (55, 334707), (59, 312015), (61, 301785), (93, 197945), (155, 118767), (165, 111569), (177, 104005), (183, 100595), (295, 62403), (305, 60357), (341, 53985), (465, 39589), (649, 28365), (671, 27435), (885, 20801), (915, 20119), (1023, 17995), (1705, 10797), (1829, 10065), (1891, 9735), (1947, 9455), (2013, 9145), (3245, 5673), (3355, 5487), (3599, 5115)]