18986246320

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1\times {\mathrm{9311}}^1$

素因数の和:9754

約数の個数: 80

約数和(自身を含む): 44894269440

約数和(自身を除く): 25908023120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 359, 568, 710, 718, 1136, 1420, 1436, 1795, 2840, 2872, 3590, 5680, 5744, 7180, 9311, 14360, 18622, 25489, 28720, 37244, 46555, 50978, 74488, 93110, 101956, 127445, 148976, 186220, 203912, 254890, 372440, 407824, 509780, 661081, 744880, 1019560, 1322162, 2039120, 2644324, 3305405, 3342649, 5288648, 6610810, 6685298, 10577296, 13221620, 13370596, 16713245, 26443240, 26741192, 33426490, 52886480, 53482384, 66852980, 133705960, 237328079, 267411920, 474656158, 949312316, 1186640395, 1898624632, 2373280790, 3797249264, 4746561580, 9493123160, 18986246320]

約数ペア:

[(1, 18986246320), (2, 9493123160), (4, 4746561580), (5, 3797249264), (8, 2373280790), (10, 1898624632), (16, 1186640395), (20, 949312316), (40, 474656158), (71, 267411920), (80, 237328079), (142, 133705960), (284, 66852980), (355, 53482384), (359, 52886480), (568, 33426490), (710, 26741192), (718, 26443240), (1136, 16713245), (1420, 13370596), (1436, 13221620), (1795, 10577296), (2840, 6685298), (2872, 6610810), (3590, 5288648), (5680, 3342649), (5744, 3305405), (7180, 2644324), (9311, 2039120), (14360, 1322162), (18622, 1019560), (25489, 744880), (28720, 661081), (37244, 509780), (46555, 407824), (50978, 372440), (74488, 254890), (93110, 203912), (101956, 186220), (127445, 148976)]