81716720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1453}}^1$

素因数の和:1522

約数の個数: 80

約数和(自身を含む): 205537440

約数和(自身を除く): 123820720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 74, 76, 80, 95, 148, 152, 185, 190, 296, 304, 370, 380, 592, 703, 740, 760, 1406, 1453, 1480, 1520, 2812, 2906, 2960, 3515, 5624, 5812, 7030, 7265, 11248, 11624, 14060, 14530, 23248, 27607, 28120, 29060, 53761, 55214, 56240, 58120, 107522, 110428, 116240, 138035, 215044, 220856, 268805, 276070, 430088, 441712, 537610, 552140, 860176, 1021459, 1075220, 1104280, 2042918, 2150440, 2208560, 4085836, 4300880, 5107295, 8171672, 10214590, 16343344, 20429180, 40858360, 81716720]

約数ペア:

[(1, 81716720), (2, 40858360), (4, 20429180), (5, 16343344), (8, 10214590), (10, 8171672), (16, 5107295), (19, 4300880), (20, 4085836), (37, 2208560), (38, 2150440), (40, 2042918), (74, 1104280), (76, 1075220), (80, 1021459), (95, 860176), (148, 552140), (152, 537610), (185, 441712), (190, 430088), (296, 276070), (304, 268805), (370, 220856), (380, 215044), (592, 138035), (703, 116240), (740, 110428), (760, 107522), (1406, 58120), (1453, 56240), (1480, 55214), (1520, 53761), (2812, 29060), (2906, 28120), (2960, 27607), (3515, 23248), (5624, 14530), (5812, 14060), (7030, 11624), (7265, 11248)]