21533512

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2689}}^1$

素因数の和:2726

約数の個数: 64

約数和(自身を含む): 54230400

約数和(自身を除く): 32696888

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 182, 286, 308, 364, 572, 616, 728, 1001, 1144, 2002, 2689, 4004, 5378, 8008, 10756, 18823, 21512, 29579, 34957, 37646, 59158, 69914, 75292, 118316, 139828, 150584, 207053, 236632, 244699, 279656, 384527, 414106, 489398, 769054, 828212, 978796, 1538108, 1656424, 1957592, 2691689, 3076216, 5383378, 10766756, 21533512]

約数ペア:

[(1, 21533512), (2, 10766756), (4, 5383378), (7, 3076216), (8, 2691689), (11, 1957592), (13, 1656424), (14, 1538108), (22, 978796), (26, 828212), (28, 769054), (44, 489398), (52, 414106), (56, 384527), (77, 279656), (88, 244699), (91, 236632), (104, 207053), (143, 150584), (154, 139828), (182, 118316), (286, 75292), (308, 69914), (364, 59158), (572, 37646), (616, 34957), (728, 29579), (1001, 21512), (1144, 18823), (2002, 10756), (2689, 8008), (4004, 5378)]