421820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 1064448

約数和(自身を除く): 642628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 131, 140, 161, 230, 262, 322, 460, 524, 644, 655, 805, 917, 1310, 1610, 1834, 2620, 3013, 3220, 3668, 4585, 6026, 9170, 12052, 15065, 18340, 21091, 30130, 42182, 60260, 84364, 105455, 210910, 421820]

約数ペア:

[(1, 421820), (2, 210910), (4, 105455), (5, 84364), (7, 60260), (10, 42182), (14, 30130), (20, 21091), (23, 18340), (28, 15065), (35, 12052), (46, 9170), (70, 6026), (92, 4585), (115, 3668), (131, 3220), (140, 3013), (161, 2620), (230, 1834), (262, 1610), (322, 1310), (460, 917), (524, 805), (644, 655)]