21461752

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 46872000

約数和(自身を除く): 25410248

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 61, 68, 104, 122, 136, 199, 221, 244, 398, 442, 488, 793, 796, 884, 1037, 1586, 1592, 1768, 2074, 2587, 3172, 3383, 4148, 5174, 6344, 6766, 8296, 10348, 12139, 13481, 13532, 20696, 24278, 26962, 27064, 43979, 48556, 53924, 87958, 97112, 107848, 157807, 175916, 206363, 315614, 351832, 412726, 631228, 825452, 1262456, 1650904, 2682719, 5365438, 10730876, 21461752]

約数ペア:

[(1, 21461752), (2, 10730876), (4, 5365438), (8, 2682719), (13, 1650904), (17, 1262456), (26, 825452), (34, 631228), (52, 412726), (61, 351832), (68, 315614), (104, 206363), (122, 175916), (136, 157807), (199, 107848), (221, 97112), (244, 87958), (398, 53924), (442, 48556), (488, 43979), (793, 27064), (796, 26962), (884, 24278), (1037, 20696), (1586, 13532), (1592, 13481), (1768, 12139), (2074, 10348), (2587, 8296), (3172, 6766), (3383, 6344), (4148, 5174)]