20648744

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 44193600

約数和(自身を除く): 23544856

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 61, 68, 76, 122, 131, 136, 152, 244, 262, 323, 488, 524, 646, 1037, 1048, 1159, 1292, 2074, 2227, 2318, 2489, 2584, 4148, 4454, 4636, 4978, 7991, 8296, 8908, 9272, 9956, 15982, 17816, 19703, 19912, 31964, 39406, 42313, 63928, 78812, 84626, 135847, 151829, 157624, 169252, 271694, 303658, 338504, 543388, 607316, 1086776, 1214632, 2581093, 5162186, 10324372, 20648744]

約数ペア:

[(1, 20648744), (2, 10324372), (4, 5162186), (8, 2581093), (17, 1214632), (19, 1086776), (34, 607316), (38, 543388), (61, 338504), (68, 303658), (76, 271694), (122, 169252), (131, 157624), (136, 151829), (152, 135847), (244, 84626), (262, 78812), (323, 63928), (488, 42313), (524, 39406), (646, 31964), (1037, 19912), (1048, 19703), (1159, 17816), (1292, 15982), (2074, 9956), (2227, 9272), (2318, 8908), (2489, 8296), (2584, 7991), (4148, 4978), (4454, 4636)]