19664540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 51093504

約数和(自身を除く): 31428964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 31, 35, 46, 62, 70, 92, 115, 124, 140, 155, 161, 197, 217, 230, 310, 322, 394, 434, 460, 620, 644, 713, 788, 805, 868, 985, 1085, 1379, 1426, 1610, 1970, 2170, 2758, 2852, 3220, 3565, 3940, 4340, 4531, 4991, 5516, 6107, 6895, 7130, 9062, 9982, 12214, 13790, 14260, 18124, 19964, 22655, 24428, 24955, 27580, 30535, 31717, 42749, 45310, 49910, 61070, 63434, 85498, 90620, 99820, 122140, 126868, 140461, 158585, 170996, 213745, 280922, 317170, 427490, 561844, 634340, 702305, 854980, 983227, 1404610, 1966454, 2809220, 3932908, 4916135, 9832270, 19664540]

約数ペア:

[(1, 19664540), (2, 9832270), (4, 4916135), (5, 3932908), (7, 2809220), (10, 1966454), (14, 1404610), (20, 983227), (23, 854980), (28, 702305), (31, 634340), (35, 561844), (46, 427490), (62, 317170), (70, 280922), (92, 213745), (115, 170996), (124, 158585), (140, 140461), (155, 126868), (161, 122140), (197, 99820), (217, 90620), (230, 85498), (310, 63434), (322, 61070), (394, 49910), (434, 45310), (460, 42749), (620, 31717), (644, 30535), (713, 27580), (788, 24955), (805, 24428), (868, 22655), (985, 19964), (1085, 18124), (1379, 14260), (1426, 13790), (1610, 12214), (1970, 9982), (2170, 9062), (2758, 7130), (2852, 6895), (3220, 6107), (3565, 5516), (3940, 4991), (4340, 4531)]