51999140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 111767040

約数和(自身を除く): 59767900

約数列:

[1, 2, 4, 5, 10, 20, 89, 131, 178, 223, 262, 356, 445, 446, 524, 655, 890, 892, 1115, 1310, 1780, 2230, 2620, 4460, 11659, 19847, 23318, 29213, 39694, 46636, 58295, 58426, 79388, 99235, 116590, 116852, 146065, 198470, 233180, 292130, 396940, 584260, 2599957, 5199914, 10399828, 12999785, 25999570, 51999140]

約数ペア:

[(1, 51999140), (2, 25999570), (4, 12999785), (5, 10399828), (10, 5199914), (20, 2599957), (89, 584260), (131, 396940), (178, 292130), (223, 233180), (262, 198470), (356, 146065), (445, 116852), (446, 116590), (524, 99235), (655, 79388), (890, 58426), (892, 58295), (1115, 46636), (1310, 39694), (1780, 29213), (2230, 23318), (2620, 19847), (4460, 11659)]