668863251

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1321}}^1$

素因数の和:1406

約数の個数: 80

約数和(自身を含む): 1228508160

約数和(自身を除く): 559644909

約数列:

[1, 3, 7, 9, 19, 21, 27, 47, 57, 63, 81, 133, 141, 171, 189, 329, 399, 423, 513, 567, 893, 987, 1197, 1269, 1321, 1539, 2679, 2961, 3591, 3807, 3963, 6251, 8037, 8883, 9247, 10773, 11889, 18753, 24111, 25099, 26649, 27741, 35667, 56259, 62087, 72333, 75297, 83223, 107001, 168777, 175693, 186261, 225891, 249669, 434609, 506331, 527079, 558783, 677673, 749007, 1179653, 1303827, 1581237, 1676349, 2033019, 3538959, 3911481, 4743711, 5029047, 8257571, 10616877, 11734443, 14231133, 24772713, 31850631, 35203329, 74318139, 95551893, 222954417, 668863251]

約数ペア:

[(1, 668863251), (3, 222954417), (7, 95551893), (9, 74318139), (19, 35203329), (21, 31850631), (27, 24772713), (47, 14231133), (57, 11734443), (63, 10616877), (81, 8257571), (133, 5029047), (141, 4743711), (171, 3911481), (189, 3538959), (329, 2033019), (399, 1676349), (423, 1581237), (513, 1303827), (567, 1179653), (893, 749007), (987, 677673), (1197, 558783), (1269, 527079), (1321, 506331), (1539, 434609), (2679, 249669), (2961, 225891), (3591, 186261), (3807, 175693), (3963, 168777), (6251, 107001), (8037, 83223), (8883, 75297), (9247, 72333), (10773, 62087), (11889, 56259), (18753, 35667), (24111, 27741), (25099, 26649)]