1678221720

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{221987}}^1$

素因数の和:222014

約数の個数: 128

約数和(自身を含む): 6393254400

約数和(自身を除く): 4715032680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 221987, 443974, 665961, 887948, 1109935, 1331922, 1553909, 1775896, 1997883, 2219870, 2663844, 3107818, 3329805, 3995766, 4439740, 4661727, 5327688, 5993649, 6215636, 6659610, 7769545, 7991532, 8879480, 9323454, 9989415, 11987298, 12431272, 13319220, 13985181, 15539090, 15983064, 18646908, 19978830, 23308635, 23974596, 26638440, 27970362, 29968245, 31078180, 37293816, 39957660, 41955543, 46617270, 47949192, 55940724, 59936490, 62156360, 69925905, 79915320, 83911086, 93234540, 111881448, 119872980, 139851810, 167822172, 186469080, 209777715, 239745960, 279703620, 335644344, 419555430, 559407240, 839110860, 1678221720]

約数ペア:

[(1, 1678221720), (2, 839110860), (3, 559407240), (4, 419555430), (5, 335644344), (6, 279703620), (7, 239745960), (8, 209777715), (9, 186469080), (10, 167822172), (12, 139851810), (14, 119872980), (15, 111881448), (18, 93234540), (20, 83911086), (21, 79915320), (24, 69925905), (27, 62156360), (28, 59936490), (30, 55940724), (35, 47949192), (36, 46617270), (40, 41955543), (42, 39957660), (45, 37293816), (54, 31078180), (56, 29968245), (60, 27970362), (63, 26638440), (70, 23974596), (72, 23308635), (84, 19978830), (90, 18646908), (105, 15983064), (108, 15539090), (120, 13985181), (126, 13319220), (135, 12431272), (140, 11987298), (168, 9989415), (180, 9323454), (189, 8879480), (210, 7991532), (216, 7769545), (252, 6659610), (270, 6215636), (280, 5993649), (315, 5327688), (360, 4661727), (378, 4439740), (420, 3995766), (504, 3329805), (540, 3107818), (630, 2663844), (756, 2219870), (840, 1997883), (945, 1775896), (1080, 1553909), (1260, 1331922), (1512, 1109935), (1890, 887948), (2520, 665961), (3780, 443974), (7560, 221987)]