80802020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 196481376

約数和(自身を除く): 115679356

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 101, 130, 170, 181, 202, 221, 260, 340, 362, 404, 442, 505, 724, 884, 905, 1010, 1105, 1313, 1717, 1810, 2020, 2210, 2353, 2626, 3077, 3434, 3620, 4420, 4706, 5252, 6154, 6565, 6868, 8585, 9412, 11765, 12308, 13130, 15385, 17170, 18281, 22321, 23530, 26260, 30770, 34340, 36562, 40001, 44642, 47060, 61540, 73124, 80002, 89284, 91405, 111605, 160004, 182810, 200005, 223210, 237653, 310777, 365620, 400010, 446420, 475306, 621554, 800020, 950612, 1188265, 1243108, 1553885, 2376530, 3107770, 4040101, 4753060, 6215540, 8080202, 16160404, 20200505, 40401010, 80802020]

約数ペア:

[(1, 80802020), (2, 40401010), (4, 20200505), (5, 16160404), (10, 8080202), (13, 6215540), (17, 4753060), (20, 4040101), (26, 3107770), (34, 2376530), (52, 1553885), (65, 1243108), (68, 1188265), (85, 950612), (101, 800020), (130, 621554), (170, 475306), (181, 446420), (202, 400010), (221, 365620), (260, 310777), (340, 237653), (362, 223210), (404, 200005), (442, 182810), (505, 160004), (724, 111605), (884, 91405), (905, 89284), (1010, 80002), (1105, 73124), (1313, 61540), (1717, 47060), (1810, 44642), (2020, 40001), (2210, 36562), (2353, 34340), (2626, 30770), (3077, 26260), (3434, 23530), (3620, 22321), (4420, 18281), (4706, 17170), (5252, 15385), (6154, 13130), (6565, 12308), (6868, 11765), (8585, 9412)]