28696460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:235

約数の個数: 96

約数和(自身を含む): 70607040

約数和(自身を除く): 41910580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 37, 38, 52, 65, 74, 76, 95, 130, 148, 157, 185, 190, 247, 260, 314, 370, 380, 481, 494, 628, 703, 740, 785, 962, 988, 1235, 1406, 1570, 1924, 2041, 2405, 2470, 2812, 2983, 3140, 3515, 4082, 4810, 4940, 5809, 5966, 7030, 8164, 9139, 9620, 10205, 11618, 11932, 14060, 14915, 18278, 20410, 23236, 29045, 29830, 36556, 38779, 40820, 45695, 58090, 59660, 75517, 77558, 91390, 110371, 116180, 151034, 155116, 182780, 193895, 220742, 302068, 377585, 387790, 441484, 551855, 755170, 775580, 1103710, 1434823, 1510340, 2207420, 2869646, 5739292, 7174115, 14348230, 28696460]

約数ペア:

[(1, 28696460), (2, 14348230), (4, 7174115), (5, 5739292), (10, 2869646), (13, 2207420), (19, 1510340), (20, 1434823), (26, 1103710), (37, 775580), (38, 755170), (52, 551855), (65, 441484), (74, 387790), (76, 377585), (95, 302068), (130, 220742), (148, 193895), (157, 182780), (185, 155116), (190, 151034), (247, 116180), (260, 110371), (314, 91390), (370, 77558), (380, 75517), (481, 59660), (494, 58090), (628, 45695), (703, 40820), (740, 38779), (785, 36556), (962, 29830), (988, 29045), (1235, 23236), (1406, 20410), (1570, 18278), (1924, 14915), (2041, 14060), (2405, 11932), (2470, 11618), (2812, 10205), (2983, 9620), (3140, 9139), (3515, 8164), (4082, 7030), (4810, 5966), (4940, 5809)]