21291264768

素因数分解:

$2^8\times 3^1\times {\mathrm{661}}^1\times {\mathrm{41941}}^1$

素因数の和:42621

約数の個数: 72

約数和(自身を含む): 56752894576

約数和(自身を除く): 35461629808

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 661, 768, 1322, 1983, 2644, 3966, 5288, 7932, 10576, 15864, 21152, 31728, 41941, 42304, 63456, 83882, 84608, 125823, 126912, 167764, 169216, 251646, 253824, 335528, 503292, 507648, 671056, 1006584, 1342112, 2013168, 2684224, 4026336, 5368448, 8052672, 10736896, 16105344, 27723001, 32210688, 55446002, 83169003, 110892004, 166338006, 221784008, 332676012, 443568016, 665352024, 887136032, 1330704048, 1774272064, 2661408096, 3548544128, 5322816192, 7097088256, 10645632384, 21291264768]

約数ペア:

[(1, 21291264768), (2, 10645632384), (3, 7097088256), (4, 5322816192), (6, 3548544128), (8, 2661408096), (12, 1774272064), (16, 1330704048), (24, 887136032), (32, 665352024), (48, 443568016), (64, 332676012), (96, 221784008), (128, 166338006), (192, 110892004), (256, 83169003), (384, 55446002), (661, 32210688), (768, 27723001), (1322, 16105344), (1983, 10736896), (2644, 8052672), (3966, 5368448), (5288, 4026336), (7932, 2684224), (10576, 2013168), (15864, 1342112), (21152, 1006584), (31728, 671056), (41941, 507648), (42304, 503292), (63456, 335528), (83882, 253824), (84608, 251646), (125823, 169216), (126912, 167764)]