420477820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{503}}^1\times {\mathrm{853}}^1$

素因数の和:1379

約数の個数: 72

約数和(自身を含む): 1030415904

約数和(自身を除く): 609938084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 503, 853, 980, 1006, 1706, 2012, 2515, 3412, 3521, 4265, 5030, 5971, 7042, 8530, 10060, 11942, 14084, 17060, 17605, 23884, 24647, 29855, 35210, 41797, 49294, 59710, 70420, 83594, 98588, 119420, 123235, 167188, 208985, 246470, 417970, 429059, 492940, 835940, 858118, 1716236, 2145295, 3003413, 4290590, 6006826, 8581180, 12013652, 15017065, 21023891, 30034130, 42047782, 60068260, 84095564, 105119455, 210238910, 420477820]

約数ペア:

[(1, 420477820), (2, 210238910), (4, 105119455), (5, 84095564), (7, 60068260), (10, 42047782), (14, 30034130), (20, 21023891), (28, 15017065), (35, 12013652), (49, 8581180), (70, 6006826), (98, 4290590), (140, 3003413), (196, 2145295), (245, 1716236), (490, 858118), (503, 835940), (853, 492940), (980, 429059), (1006, 417970), (1706, 246470), (2012, 208985), (2515, 167188), (3412, 123235), (3521, 119420), (4265, 98588), (5030, 83594), (5971, 70420), (7042, 59710), (8530, 49294), (10060, 41797), (11942, 35210), (14084, 29855), (17060, 24647), (17605, 23884)]