20053280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:370

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 32782048

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 311, 403, 416, 496, 520, 620, 622, 806, 992, 1040, 1240, 1244, 1555, 1612, 2015, 2080, 2480, 2488, 3110, 3224, 4030, 4043, 4960, 4976, 6220, 6448, 8060, 8086, 9641, 9952, 12440, 12896, 16120, 16172, 19282, 20215, 24880, 32240, 32344, 38564, 40430, 48205, 49760, 64480, 64688, 77128, 80860, 96410, 125333, 129376, 154256, 161720, 192820, 250666, 308512, 323440, 385640, 501332, 626665, 646880, 771280, 1002664, 1253330, 1542560, 2005328, 2506660, 4010656, 5013320, 10026640, 20053280]

約数ペア:

[(1, 20053280), (2, 10026640), (4, 5013320), (5, 4010656), (8, 2506660), (10, 2005328), (13, 1542560), (16, 1253330), (20, 1002664), (26, 771280), (31, 646880), (32, 626665), (40, 501332), (52, 385640), (62, 323440), (65, 308512), (80, 250666), (104, 192820), (124, 161720), (130, 154256), (155, 129376), (160, 125333), (208, 96410), (248, 80860), (260, 77128), (310, 64688), (311, 64480), (403, 49760), (416, 48205), (496, 40430), (520, 38564), (620, 32344), (622, 32240), (806, 24880), (992, 20215), (1040, 19282), (1240, 16172), (1244, 16120), (1555, 12896), (1612, 12440), (2015, 9952), (2080, 9641), (2480, 8086), (2488, 8060), (3110, 6448), (3224, 6220), (4030, 4976), (4043, 4960)]