21220430

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:190

約数の個数: 96

約数和(自身を含む): 50429952

約数和(自身を除く): 29209522

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 31, 35, 49, 55, 62, 70, 77, 98, 110, 127, 154, 155, 217, 245, 254, 310, 341, 385, 434, 490, 539, 635, 682, 770, 889, 1078, 1085, 1270, 1397, 1519, 1705, 1778, 2170, 2387, 2695, 2794, 3038, 3410, 3937, 4445, 4774, 5390, 6223, 6985, 7595, 7874, 8890, 9779, 11935, 12446, 13970, 15190, 16709, 19558, 19685, 23870, 27559, 31115, 33418, 39370, 43307, 48895, 55118, 62230, 68453, 83545, 86614, 97790, 136906, 137795, 167090, 192913, 216535, 275590, 303149, 342265, 385826, 433070, 606298, 684530, 964565, 1515745, 1929130, 2122043, 3031490, 4244086, 10610215, 21220430]

約数ペア:

[(1, 21220430), (2, 10610215), (5, 4244086), (7, 3031490), (10, 2122043), (11, 1929130), (14, 1515745), (22, 964565), (31, 684530), (35, 606298), (49, 433070), (55, 385826), (62, 342265), (70, 303149), (77, 275590), (98, 216535), (110, 192913), (127, 167090), (154, 137795), (155, 136906), (217, 97790), (245, 86614), (254, 83545), (310, 68453), (341, 62230), (385, 55118), (434, 48895), (490, 43307), (539, 39370), (635, 33418), (682, 31115), (770, 27559), (889, 23870), (1078, 19685), (1085, 19558), (1270, 16709), (1397, 15190), (1519, 13970), (1705, 12446), (1778, 11935), (2170, 9779), (2387, 8890), (2695, 7874), (2794, 7595), (3038, 6985), (3410, 6223), (3937, 5390), (4445, 4774)]