1990918410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{221953}}^1$

素因数の和:221999

約数の個数: 64

約数和(自身を含む): 5369511168

約数和(自身を除く): 3378592758

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 115, 130, 138, 195, 230, 299, 345, 390, 598, 690, 897, 1495, 1794, 2990, 4485, 8970, 221953, 443906, 665859, 1109765, 1331718, 2219530, 2885389, 3329295, 5104919, 5770778, 6658590, 8656167, 10209838, 14426945, 15314757, 17312334, 25524595, 28853890, 30629514, 43280835, 51049190, 66363947, 76573785, 86561670, 132727894, 153147570, 199091841, 331819735, 398183682, 663639470, 995459205, 1990918410]

約数ペア:

[(1, 1990918410), (2, 995459205), (3, 663639470), (5, 398183682), (6, 331819735), (10, 199091841), (13, 153147570), (15, 132727894), (23, 86561670), (26, 76573785), (30, 66363947), (39, 51049190), (46, 43280835), (65, 30629514), (69, 28853890), (78, 25524595), (115, 17312334), (130, 15314757), (138, 14426945), (195, 10209838), (230, 8656167), (299, 6658590), (345, 5770778), (390, 5104919), (598, 3329295), (690, 2885389), (897, 2219530), (1495, 1331718), (1794, 1109765), (2990, 665859), (4485, 443906), (8970, 221953)]