18916590

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:478

約数の個数: 128

約数和(自身を含む): 59719680

約数和(自身を除く): 40803090

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 19, 21, 22, 30, 33, 35, 38, 42, 55, 57, 66, 70, 77, 95, 105, 110, 114, 133, 154, 165, 190, 209, 210, 231, 266, 285, 330, 385, 399, 418, 431, 462, 570, 627, 665, 770, 798, 862, 1045, 1155, 1254, 1293, 1330, 1463, 1995, 2090, 2155, 2310, 2586, 2926, 3017, 3135, 3990, 4310, 4389, 4741, 6034, 6270, 6465, 7315, 8189, 8778, 9051, 9482, 12930, 14223, 14630, 15085, 16378, 18102, 21945, 23705, 24567, 28446, 30170, 33187, 40945, 43890, 45255, 47410, 49134, 57323, 66374, 71115, 81890, 90079, 90510, 99561, 114646, 122835, 142230, 165935, 171969, 180158, 199122, 245670, 270237, 286615, 331870, 343938, 450395, 497805, 540474, 573230, 630553, 859845, 900790, 995610, 1261106, 1351185, 1719690, 1891659, 2702370, 3152765, 3783318, 6305530, 9458295, 18916590]

約数ペア:

[(1, 18916590), (2, 9458295), (3, 6305530), (5, 3783318), (6, 3152765), (7, 2702370), (10, 1891659), (11, 1719690), (14, 1351185), (15, 1261106), (19, 995610), (21, 900790), (22, 859845), (30, 630553), (33, 573230), (35, 540474), (38, 497805), (42, 450395), (55, 343938), (57, 331870), (66, 286615), (70, 270237), (77, 245670), (95, 199122), (105, 180158), (110, 171969), (114, 165935), (133, 142230), (154, 122835), (165, 114646), (190, 99561), (209, 90510), (210, 90079), (231, 81890), (266, 71115), (285, 66374), (330, 57323), (385, 49134), (399, 47410), (418, 45255), (431, 43890), (462, 40945), (570, 33187), (627, 30170), (665, 28446), (770, 24567), (798, 23705), (862, 21945), (1045, 18102), (1155, 16378), (1254, 15085), (1293, 14630), (1330, 14223), (1463, 12930), (1995, 9482), (2090, 9051), (2155, 8778), (2310, 8189), (2586, 7315), (2926, 6465), (3017, 6270), (3135, 6034), (3990, 4741), (4310, 4389)]