81112625920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2044169}}^1$

素因数の和:2044221

約数の個数: 72

約数和(自身を含む): 200557607040

約数和(自身を除く): 119444981120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 2044169, 4088338, 8176676, 10220845, 16353352, 20441690, 32706704, 40883380, 63369239, 65413408, 81766760, 126738478, 130826816, 163533520, 253476956, 261653632, 316846195, 327067040, 506953912, 523307264, 633692390, 654134080, 1013907824, 1267384780, 1308268160, 2027815648, 2534769560, 2616536320, 4055631296, 5069539120, 8111262592, 10139078240, 16222525184, 20278156480, 40556312960, 81112625920]

約数ペア:

[(1, 81112625920), (2, 40556312960), (4, 20278156480), (5, 16222525184), (8, 10139078240), (10, 8111262592), (16, 5069539120), (20, 4055631296), (31, 2616536320), (32, 2534769560), (40, 2027815648), (62, 1308268160), (64, 1267384780), (80, 1013907824), (124, 654134080), (128, 633692390), (155, 523307264), (160, 506953912), (248, 327067040), (256, 316846195), (310, 261653632), (320, 253476956), (496, 163533520), (620, 130826816), (640, 126738478), (992, 81766760), (1240, 65413408), (1280, 63369239), (1984, 40883380), (2480, 32706704), (3968, 20441690), (4960, 16353352), (7936, 10220845), (9920, 8176676), (19840, 4088338), (39680, 2044169)]