21618064

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^2$

素因数の和:164

約数の個数: 60

約数和(自身を含む): 47216596

約数和(自身を除く): 25598532

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 53, 74, 104, 106, 148, 208, 212, 296, 424, 481, 592, 689, 848, 962, 1378, 1924, 1961, 2756, 2809, 3848, 3922, 5512, 5618, 7696, 7844, 11024, 11236, 15688, 22472, 25493, 31376, 36517, 44944, 50986, 73034, 101972, 103933, 146068, 203944, 207866, 292136, 407888, 415732, 584272, 831464, 1351129, 1662928, 2702258, 5404516, 10809032, 21618064]

約数ペア:

[(1, 21618064), (2, 10809032), (4, 5404516), (8, 2702258), (13, 1662928), (16, 1351129), (26, 831464), (37, 584272), (52, 415732), (53, 407888), (74, 292136), (104, 207866), (106, 203944), (148, 146068), (208, 103933), (212, 101972), (296, 73034), (424, 50986), (481, 44944), (592, 36517), (689, 31376), (848, 25493), (962, 22472), (1378, 15688), (1924, 11236), (1961, 11024), (2756, 7844), (2809, 7696), (3848, 5618), (3922, 5512)]