400596144

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{641981}}^1$

素因数の和:642005

約数の個数: 40

約数和(自身を含む): 1114480752

約数和(自身を除く): 713884608

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 641981, 1283962, 1925943, 2567924, 3851886, 5135848, 7703772, 8345753, 10271696, 15407544, 16691506, 25037259, 30815088, 33383012, 50074518, 66766024, 100149036, 133532048, 200298072, 400596144]

約数ペア:

[(1, 400596144), (2, 200298072), (3, 133532048), (4, 100149036), (6, 66766024), (8, 50074518), (12, 33383012), (13, 30815088), (16, 25037259), (24, 16691506), (26, 15407544), (39, 10271696), (48, 8345753), (52, 7703772), (78, 5135848), (104, 3851886), (156, 2567924), (208, 1925943), (312, 1283962), (624, 641981)]