28330120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 80720640

約数和(自身を除く): 52390520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 52, 56, 65, 70, 86, 91, 104, 130, 140, 172, 181, 182, 215, 260, 280, 301, 344, 362, 364, 430, 455, 520, 559, 602, 724, 728, 860, 905, 910, 1118, 1204, 1267, 1448, 1505, 1720, 1810, 1820, 2236, 2353, 2408, 2534, 2795, 3010, 3620, 3640, 3913, 4472, 4706, 5068, 5590, 6020, 6335, 7240, 7783, 7826, 9412, 10136, 11180, 11765, 12040, 12670, 15566, 15652, 16471, 18824, 19565, 22360, 23530, 25340, 31132, 31304, 32942, 38915, 39130, 47060, 50680, 54481, 62264, 65884, 77830, 78260, 82355, 94120, 101179, 108962, 131768, 155660, 156520, 164710, 202358, 217924, 272405, 311320, 329420, 404716, 435848, 505895, 544810, 658840, 708253, 809432, 1011790, 1089620, 1416506, 2023580, 2179240, 2833012, 3541265, 4047160, 5666024, 7082530, 14165060, 28330120]

約数ペア:

[(1, 28330120), (2, 14165060), (4, 7082530), (5, 5666024), (7, 4047160), (8, 3541265), (10, 2833012), (13, 2179240), (14, 2023580), (20, 1416506), (26, 1089620), (28, 1011790), (35, 809432), (40, 708253), (43, 658840), (52, 544810), (56, 505895), (65, 435848), (70, 404716), (86, 329420), (91, 311320), (104, 272405), (130, 217924), (140, 202358), (172, 164710), (181, 156520), (182, 155660), (215, 131768), (260, 108962), (280, 101179), (301, 94120), (344, 82355), (362, 78260), (364, 77830), (430, 65884), (455, 62264), (520, 54481), (559, 50680), (602, 47060), (724, 39130), (728, 38915), (860, 32942), (905, 31304), (910, 31132), (1118, 25340), (1204, 23530), (1267, 22360), (1448, 19565), (1505, 18824), (1720, 16471), (1810, 15652), (1820, 15566), (2236, 12670), (2353, 12040), (2408, 11765), (2534, 11180), (2795, 10136), (3010, 9412), (3620, 7826), (3640, 7783), (3913, 7240), (4472, 6335), (4706, 6020), (5068, 5590)]