21821120

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:170

約数の個数: 112

約数和(自身を含む): 56753760

約数和(自身を除く): 34932640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 37, 38, 40, 64, 74, 76, 80, 95, 97, 148, 152, 160, 185, 190, 194, 296, 304, 320, 370, 380, 388, 485, 592, 608, 703, 740, 760, 776, 970, 1184, 1216, 1406, 1480, 1520, 1552, 1843, 1940, 2368, 2812, 2960, 3040, 3104, 3515, 3589, 3686, 3880, 5624, 5920, 6080, 6208, 7030, 7178, 7372, 7760, 9215, 11248, 11840, 14060, 14356, 14744, 15520, 17945, 18430, 22496, 28120, 28712, 29488, 31040, 35890, 36860, 44992, 56240, 57424, 58976, 68191, 71780, 73720, 112480, 114848, 117952, 136382, 143560, 147440, 224960, 229696, 272764, 287120, 294880, 340955, 545528, 574240, 589760, 681910, 1091056, 1148480, 1363820, 2182112, 2727640, 4364224, 5455280, 10910560, 21821120]

約数ペア:

[(1, 21821120), (2, 10910560), (4, 5455280), (5, 4364224), (8, 2727640), (10, 2182112), (16, 1363820), (19, 1148480), (20, 1091056), (32, 681910), (37, 589760), (38, 574240), (40, 545528), (64, 340955), (74, 294880), (76, 287120), (80, 272764), (95, 229696), (97, 224960), (148, 147440), (152, 143560), (160, 136382), (185, 117952), (190, 114848), (194, 112480), (296, 73720), (304, 71780), (320, 68191), (370, 58976), (380, 57424), (388, 56240), (485, 44992), (592, 36860), (608, 35890), (703, 31040), (740, 29488), (760, 28712), (776, 28120), (970, 22496), (1184, 18430), (1216, 17945), (1406, 15520), (1480, 14744), (1520, 14356), (1552, 14060), (1843, 11840), (1940, 11248), (2368, 9215), (2812, 7760), (2960, 7372), (3040, 7178), (3104, 7030), (3515, 6208), (3589, 6080), (3686, 5920), (3880, 5624)]