21097854128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2473951}}^1$

素因数の和:2474013

約数の個数: 40

約数和(自身を含む): 45095197056

約数和(自身を除く): 23997342928

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 4264, 8528, 2473951, 4947902, 9895804, 19791608, 32161363, 39583216, 64322726, 101431991, 128645452, 202863982, 257290904, 405727964, 514581808, 811455928, 1318615883, 1622911856, 2637231766, 5274463532, 10548927064, 21097854128]

約数ペア:

[(1, 21097854128), (2, 10548927064), (4, 5274463532), (8, 2637231766), (13, 1622911856), (16, 1318615883), (26, 811455928), (41, 514581808), (52, 405727964), (82, 257290904), (104, 202863982), (164, 128645452), (208, 101431991), (328, 64322726), (533, 39583216), (656, 32161363), (1066, 19791608), (2132, 9895804), (4264, 4947902), (8528, 2473951)]