21289488

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:744

約数の個数: 80

約数和(自身を含む): 61073472

約数和(自身を除く): 39783984

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 61, 66, 88, 122, 132, 176, 183, 244, 264, 366, 488, 528, 661, 671, 732, 976, 1322, 1342, 1464, 1983, 2013, 2644, 2684, 2928, 3966, 4026, 5288, 5368, 7271, 7932, 8052, 10576, 10736, 14542, 15864, 16104, 21813, 29084, 31728, 32208, 40321, 43626, 58168, 80642, 87252, 116336, 120963, 161284, 174504, 241926, 322568, 349008, 443531, 483852, 645136, 887062, 967704, 1330593, 1774124, 1935408, 2661186, 3548248, 5322372, 7096496, 10644744, 21289488]

約数ペア:

[(1, 21289488), (2, 10644744), (3, 7096496), (4, 5322372), (6, 3548248), (8, 2661186), (11, 1935408), (12, 1774124), (16, 1330593), (22, 967704), (24, 887062), (33, 645136), (44, 483852), (48, 443531), (61, 349008), (66, 322568), (88, 241926), (122, 174504), (132, 161284), (176, 120963), (183, 116336), (244, 87252), (264, 80642), (366, 58168), (488, 43626), (528, 40321), (661, 32208), (671, 31728), (732, 29084), (976, 21813), (1322, 16104), (1342, 15864), (1464, 14542), (1983, 10736), (2013, 10576), (2644, 8052), (2684, 7932), (2928, 7271), (3966, 5368), (4026, 5288)]