71201780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 173365920

約数和(自身を除く): 102164140

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 89, 130, 170, 178, 181, 221, 260, 340, 356, 362, 442, 445, 724, 884, 890, 905, 1105, 1157, 1513, 1780, 1810, 2210, 2314, 2353, 3026, 3077, 3620, 4420, 4628, 4706, 5785, 6052, 6154, 7565, 9412, 11570, 11765, 12308, 15130, 15385, 16109, 19669, 23140, 23530, 30260, 30770, 32218, 39338, 40001, 47060, 61540, 64436, 78676, 80002, 80545, 98345, 160004, 161090, 196690, 200005, 209417, 273853, 322180, 393380, 400010, 418834, 547706, 800020, 837668, 1047085, 1095412, 1369265, 2094170, 2738530, 3560089, 4188340, 5477060, 7120178, 14240356, 17800445, 35600890, 71201780]

約数ペア:

[(1, 71201780), (2, 35600890), (4, 17800445), (5, 14240356), (10, 7120178), (13, 5477060), (17, 4188340), (20, 3560089), (26, 2738530), (34, 2094170), (52, 1369265), (65, 1095412), (68, 1047085), (85, 837668), (89, 800020), (130, 547706), (170, 418834), (178, 400010), (181, 393380), (221, 322180), (260, 273853), (340, 209417), (356, 200005), (362, 196690), (442, 161090), (445, 160004), (724, 98345), (884, 80545), (890, 80002), (905, 78676), (1105, 64436), (1157, 61540), (1513, 47060), (1780, 40001), (1810, 39338), (2210, 32218), (2314, 30770), (2353, 30260), (3026, 23530), (3077, 23140), (3620, 19669), (4420, 16109), (4628, 15385), (4706, 15130), (5785, 12308), (6052, 11765), (6154, 11570), (7565, 9412)]