278325920

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{28517}}^1$

素因数の和:28593

約数の個数: 48

約数和(自身を含む): 668347848

約数和(自身を除く): 390021928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2440, 4880, 9760, 28517, 57034, 114068, 142585, 228136, 285170, 456272, 570340, 912544, 1140680, 1739537, 2281360, 3479074, 4562720, 6958148, 8697685, 13916296, 17395370, 27832592, 34790740, 55665184, 69581480, 139162960, 278325920]

約数ペア:

[(1, 278325920), (2, 139162960), (4, 69581480), (5, 55665184), (8, 34790740), (10, 27832592), (16, 17395370), (20, 13916296), (32, 8697685), (40, 6958148), (61, 4562720), (80, 3479074), (122, 2281360), (160, 1739537), (244, 1140680), (305, 912544), (488, 570340), (610, 456272), (976, 285170), (1220, 228136), (1952, 142585), (2440, 114068), (4880, 57034), (9760, 28517)]