19909552

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:270

約数の個数: 60

約数和(自身を含む): 43114800

約数和(自身を除く): 23205248

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 169, 199, 208, 296, 338, 398, 481, 592, 676, 796, 962, 1352, 1592, 1924, 2587, 2704, 3184, 3848, 5174, 6253, 7363, 7696, 10348, 12506, 14726, 20696, 25012, 29452, 33631, 41392, 50024, 58904, 67262, 95719, 100048, 117808, 134524, 191438, 269048, 382876, 538096, 765752, 1244347, 1531504, 2488694, 4977388, 9954776, 19909552]

約数ペア:

[(1, 19909552), (2, 9954776), (4, 4977388), (8, 2488694), (13, 1531504), (16, 1244347), (26, 765752), (37, 538096), (52, 382876), (74, 269048), (104, 191438), (148, 134524), (169, 117808), (199, 100048), (208, 95719), (296, 67262), (338, 58904), (398, 50024), (481, 41392), (592, 33631), (676, 29452), (796, 25012), (962, 20696), (1352, 14726), (1592, 12506), (1924, 10348), (2587, 7696), (2704, 7363), (3184, 6253), (3848, 5174)]