21713770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 23646230

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 59, 65, 95, 118, 130, 149, 190, 247, 295, 298, 494, 590, 745, 767, 1121, 1235, 1490, 1534, 1937, 2242, 2470, 2831, 3835, 3874, 5605, 5662, 7670, 8791, 9685, 11210, 14155, 14573, 17582, 19370, 28310, 29146, 36803, 43955, 72865, 73606, 87910, 114283, 145730, 167029, 184015, 228566, 334058, 368030, 571415, 835145, 1142830, 1670290, 2171377, 4342754, 10856885, 21713770]

約数ペア:

[(1, 21713770), (2, 10856885), (5, 4342754), (10, 2171377), (13, 1670290), (19, 1142830), (26, 835145), (38, 571415), (59, 368030), (65, 334058), (95, 228566), (118, 184015), (130, 167029), (149, 145730), (190, 114283), (247, 87910), (295, 73606), (298, 72865), (494, 43955), (590, 36803), (745, 29146), (767, 28310), (1121, 19370), (1235, 17582), (1490, 14573), (1534, 14155), (1937, 11210), (2242, 9685), (2470, 8791), (2831, 7670), (3835, 5662), (3874, 5605)]