28949540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 68947200

約数和(自身を除く): 39997660

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 37, 38, 58, 71, 74, 76, 95, 116, 142, 145, 148, 185, 190, 284, 290, 355, 370, 380, 551, 580, 703, 710, 740, 1073, 1102, 1349, 1406, 1420, 2059, 2146, 2204, 2627, 2698, 2755, 2812, 3515, 4118, 4292, 5254, 5365, 5396, 5510, 6745, 7030, 8236, 10295, 10508, 10730, 11020, 13135, 13490, 14060, 20387, 20590, 21460, 26270, 26980, 39121, 40774, 41180, 49913, 52540, 76183, 78242, 81548, 99826, 101935, 152366, 156484, 195605, 199652, 203870, 249565, 304732, 380915, 391210, 407740, 499130, 761830, 782420, 998260, 1447477, 1523660, 2894954, 5789908, 7237385, 14474770, 28949540]

約数ペア:

[(1, 28949540), (2, 14474770), (4, 7237385), (5, 5789908), (10, 2894954), (19, 1523660), (20, 1447477), (29, 998260), (37, 782420), (38, 761830), (58, 499130), (71, 407740), (74, 391210), (76, 380915), (95, 304732), (116, 249565), (142, 203870), (145, 199652), (148, 195605), (185, 156484), (190, 152366), (284, 101935), (290, 99826), (355, 81548), (370, 78242), (380, 76183), (551, 52540), (580, 49913), (703, 41180), (710, 40774), (740, 39121), (1073, 26980), (1102, 26270), (1349, 21460), (1406, 20590), (1420, 20387), (2059, 14060), (2146, 13490), (2204, 13135), (2627, 11020), (2698, 10730), (2755, 10508), (2812, 10295), (3515, 8236), (4118, 7030), (4292, 6745), (5254, 5510), (5365, 5396)]