16956940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1$

素因数の和:69

約数の個数: 144

約数和(自身を含む): 49067424

約数和(自身を除く): 32110484

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 121, 130, 140, 143, 154, 182, 196, 220, 242, 245, 260, 286, 308, 364, 385, 455, 484, 490, 539, 572, 605, 637, 715, 770, 847, 910, 980, 1001, 1078, 1210, 1274, 1331, 1430, 1540, 1573, 1694, 1820, 2002, 2156, 2420, 2548, 2662, 2695, 2860, 3146, 3185, 3388, 4004, 4235, 5005, 5324, 5390, 5929, 6292, 6370, 6655, 7007, 7865, 8470, 9317, 10010, 10780, 11011, 11858, 12740, 13310, 14014, 15730, 16940, 17303, 18634, 20020, 22022, 23716, 26620, 28028, 29645, 31460, 34606, 35035, 37268, 44044, 46585, 55055, 59290, 65219, 69212, 70070, 77077, 86515, 93170, 110110, 118580, 121121, 130438, 140140, 154154, 173030, 186340, 220220, 242242, 260876, 308308, 326095, 346060, 385385, 484484, 605605, 652190, 770770, 847847, 1211210, 1304380, 1541540, 1695694, 2422420, 3391388, 4239235, 8478470, 16956940]

約数ペア:

[(1, 16956940), (2, 8478470), (4, 4239235), (5, 3391388), (7, 2422420), (10, 1695694), (11, 1541540), (13, 1304380), (14, 1211210), (20, 847847), (22, 770770), (26, 652190), (28, 605605), (35, 484484), (44, 385385), (49, 346060), (52, 326095), (55, 308308), (65, 260876), (70, 242242), (77, 220220), (91, 186340), (98, 173030), (110, 154154), (121, 140140), (130, 130438), (140, 121121), (143, 118580), (154, 110110), (182, 93170), (196, 86515), (220, 77077), (242, 70070), (245, 69212), (260, 65219), (286, 59290), (308, 55055), (364, 46585), (385, 44044), (455, 37268), (484, 35035), (490, 34606), (539, 31460), (572, 29645), (605, 28028), (637, 26620), (715, 23716), (770, 22022), (847, 20020), (910, 18634), (980, 17303), (1001, 16940), (1078, 15730), (1210, 14014), (1274, 13310), (1331, 12740), (1430, 11858), (1540, 11011), (1573, 10780), (1694, 10010), (1820, 9317), (2002, 8470), (2156, 7865), (2420, 7007), (2548, 6655), (2662, 6370), (2695, 6292), (2860, 5929), (3146, 5390), (3185, 5324), (3388, 5005), (4004, 4235)]