199973840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2011}}^1$

素因数の和:2148

約数の個数: 80

約数和(自身を含む): 511949376

約数和(自身を除く): 311975536

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 113, 176, 220, 226, 440, 452, 565, 880, 904, 1130, 1243, 1808, 2011, 2260, 2486, 4022, 4520, 4972, 6215, 8044, 9040, 9944, 10055, 12430, 16088, 19888, 20110, 22121, 24860, 32176, 40220, 44242, 49720, 80440, 88484, 99440, 110605, 160880, 176968, 221210, 227243, 353936, 442420, 454486, 884840, 908972, 1136215, 1769680, 1817944, 2272430, 2499673, 3635888, 4544860, 4999346, 9089720, 9998692, 12498365, 18179440, 19997384, 24996730, 39994768, 49993460, 99986920, 199973840]

約数ペア:

[(1, 199973840), (2, 99986920), (4, 49993460), (5, 39994768), (8, 24996730), (10, 19997384), (11, 18179440), (16, 12498365), (20, 9998692), (22, 9089720), (40, 4999346), (44, 4544860), (55, 3635888), (80, 2499673), (88, 2272430), (110, 1817944), (113, 1769680), (176, 1136215), (220, 908972), (226, 884840), (440, 454486), (452, 442420), (565, 353936), (880, 227243), (904, 221210), (1130, 176968), (1243, 160880), (1808, 110605), (2011, 99440), (2260, 88484), (2486, 80440), (4022, 49720), (4520, 44242), (4972, 40220), (6215, 32176), (8044, 24860), (9040, 22121), (9944, 20110), (10055, 19888), (12430, 16088)]