81157300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{431}}^1$

素因数の和:721

約数の個数: 72

約数和(自身を含む): 202487040

約数和(自身を除く): 121329740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 269, 350, 431, 538, 700, 862, 1076, 1345, 1724, 1883, 2155, 2690, 3017, 3766, 4310, 5380, 6034, 6725, 7532, 8620, 9415, 10775, 12068, 13450, 15085, 18830, 21550, 26900, 30170, 37660, 43100, 47075, 60340, 75425, 94150, 115939, 150850, 188300, 231878, 301700, 463756, 579695, 811573, 1159390, 1623146, 2318780, 2898475, 3246292, 4057865, 5796950, 8115730, 11593900, 16231460, 20289325, 40578650, 81157300]

約数ペア:

[(1, 81157300), (2, 40578650), (4, 20289325), (5, 16231460), (7, 11593900), (10, 8115730), (14, 5796950), (20, 4057865), (25, 3246292), (28, 2898475), (35, 2318780), (50, 1623146), (70, 1159390), (100, 811573), (140, 579695), (175, 463756), (269, 301700), (350, 231878), (431, 188300), (538, 150850), (700, 115939), (862, 94150), (1076, 75425), (1345, 60340), (1724, 47075), (1883, 43100), (2155, 37660), (2690, 30170), (3017, 26900), (3766, 21550), (4310, 18830), (5380, 15085), (6034, 13450), (6725, 12068), (7532, 10775), (8620, 9415)]