19981237250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{149953}}^1$

素因数の和:150024

約数の個数: 64

約数和(自身を含む): 41264941536

約数和(自身を除く): 21283704286

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 125, 130, 205, 250, 325, 410, 533, 650, 1025, 1066, 1625, 2050, 2665, 3250, 5125, 5330, 10250, 13325, 26650, 66625, 133250, 149953, 299906, 749765, 1499530, 1949389, 3748825, 3898778, 6148073, 7497650, 9746945, 12296146, 18744125, 19493890, 30740365, 37488250, 48734725, 61480730, 79924949, 97469450, 153701825, 159849898, 243673625, 307403650, 399624745, 487347250, 768509125, 799249490, 1537018250, 1998123725, 3996247450, 9990618625, 19981237250]

約数ペア:

[(1, 19981237250), (2, 9990618625), (5, 3996247450), (10, 1998123725), (13, 1537018250), (25, 799249490), (26, 768509125), (41, 487347250), (50, 399624745), (65, 307403650), (82, 243673625), (125, 159849898), (130, 153701825), (205, 97469450), (250, 79924949), (325, 61480730), (410, 48734725), (533, 37488250), (650, 30740365), (1025, 19493890), (1066, 18744125), (1625, 12296146), (2050, 9746945), (2665, 7497650), (3250, 6148073), (5125, 3898778), (5330, 3748825), (10250, 1949389), (13325, 1499530), (26650, 749765), (66625, 299906), (133250, 149953)]