31133440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1871}}^1$

素因数の和:1905

約数の個数: 72

約数和(自身を含む): 80353728

約数和(自身を除く): 49220288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 1871, 2080, 3328, 3742, 4160, 7484, 8320, 9355, 14968, 16640, 18710, 24323, 29936, 37420, 48646, 59872, 74840, 97292, 119744, 121615, 149680, 194584, 239488, 243230, 299360, 389168, 478976, 486460, 598720, 778336, 972920, 1197440, 1556672, 1945840, 2394880, 3113344, 3891680, 6226688, 7783360, 15566720, 31133440]

約数ペア:

[(1, 31133440), (2, 15566720), (4, 7783360), (5, 6226688), (8, 3891680), (10, 3113344), (13, 2394880), (16, 1945840), (20, 1556672), (26, 1197440), (32, 972920), (40, 778336), (52, 598720), (64, 486460), (65, 478976), (80, 389168), (104, 299360), (128, 243230), (130, 239488), (160, 194584), (208, 149680), (256, 121615), (260, 119744), (320, 97292), (416, 74840), (520, 59872), (640, 48646), (832, 37420), (1040, 29936), (1280, 24323), (1664, 18710), (1871, 16640), (2080, 14968), (3328, 9355), (3742, 8320), (4160, 7484)]