81403520

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:434

約数の個数: 128

約数和(自身を含む): 219732480

約数和(自身を除く): 138328960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 128, 155, 160, 176, 220, 248, 310, 320, 341, 352, 373, 440, 496, 620, 640, 682, 704, 746, 880, 992, 1240, 1364, 1408, 1492, 1705, 1760, 1865, 1984, 2480, 2728, 2984, 3410, 3520, 3730, 3968, 4103, 4960, 5456, 5968, 6820, 7040, 7460, 8206, 9920, 10912, 11563, 11936, 13640, 14920, 16412, 19840, 20515, 21824, 23126, 23872, 27280, 29840, 32824, 41030, 43648, 46252, 47744, 54560, 57815, 59680, 65648, 82060, 92504, 109120, 115630, 119360, 127193, 131296, 164120, 185008, 218240, 231260, 238720, 254386, 262592, 328240, 370016, 462520, 508772, 525184, 635965, 656480, 740032, 925040, 1017544, 1271930, 1312960, 1480064, 1850080, 2035088, 2543860, 2625920, 3700160, 4070176, 5087720, 7400320, 8140352, 10175440, 16280704, 20350880, 40701760, 81403520]

約数ペア:

[(1, 81403520), (2, 40701760), (4, 20350880), (5, 16280704), (8, 10175440), (10, 8140352), (11, 7400320), (16, 5087720), (20, 4070176), (22, 3700160), (31, 2625920), (32, 2543860), (40, 2035088), (44, 1850080), (55, 1480064), (62, 1312960), (64, 1271930), (80, 1017544), (88, 925040), (110, 740032), (124, 656480), (128, 635965), (155, 525184), (160, 508772), (176, 462520), (220, 370016), (248, 328240), (310, 262592), (320, 254386), (341, 238720), (352, 231260), (373, 218240), (440, 185008), (496, 164120), (620, 131296), (640, 127193), (682, 119360), (704, 115630), (746, 109120), (880, 92504), (992, 82060), (1240, 65648), (1364, 59680), (1408, 57815), (1492, 54560), (1705, 47744), (1760, 46252), (1865, 43648), (1984, 41030), (2480, 32824), (2728, 29840), (2984, 27280), (3410, 23872), (3520, 23126), (3730, 21824), (3968, 20515), (4103, 19840), (4960, 16412), (5456, 14920), (5968, 13640), (6820, 11936), (7040, 11563), (7460, 10912), (8206, 9920)]