21868340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{349}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 49803600

約数和(自身を除く): 27935260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 349, 482, 698, 964, 1205, 1396, 1745, 2410, 3133, 3490, 4537, 4820, 6266, 6980, 9074, 12532, 15665, 18148, 22685, 31330, 45370, 62660, 84109, 90740, 168218, 336436, 420545, 841090, 1093417, 1682180, 2186834, 4373668, 5467085, 10934170, 21868340]

約数ペア:

[(1, 21868340), (2, 10934170), (4, 5467085), (5, 4373668), (10, 2186834), (13, 1682180), (20, 1093417), (26, 841090), (52, 420545), (65, 336436), (130, 168218), (241, 90740), (260, 84109), (349, 62660), (482, 45370), (698, 31330), (964, 22685), (1205, 18148), (1396, 15665), (1745, 12532), (2410, 9074), (3133, 6980), (3490, 6266), (4537, 4820)]