21255984

素因数分解:

$2^4\times 3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:507

約数の個数: 120

約数和(自身を含む): 66446640

約数和(自身を除く): 45190656

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 19, 24, 34, 36, 38, 48, 51, 57, 68, 72, 76, 102, 114, 136, 144, 152, 153, 171, 204, 228, 272, 304, 306, 323, 342, 408, 456, 457, 612, 646, 684, 816, 912, 914, 969, 1224, 1292, 1368, 1371, 1828, 1938, 2448, 2584, 2736, 2742, 2907, 3656, 3876, 4113, 5168, 5484, 5814, 7312, 7752, 7769, 8226, 8683, 10968, 11628, 15504, 15538, 16452, 17366, 21936, 23256, 23307, 26049, 31076, 32904, 34732, 46512, 46614, 52098, 62152, 65808, 69464, 69921, 78147, 93228, 104196, 124304, 138928, 139842, 147611, 156294, 186456, 208392, 279684, 295222, 312588, 372912, 416784, 442833, 559368, 590444, 625176, 885666, 1118736, 1180888, 1250352, 1328499, 1771332, 2361776, 2656998, 3542664, 5313996, 7085328, 10627992, 21255984]

約数ペア:

[(1, 21255984), (2, 10627992), (3, 7085328), (4, 5313996), (6, 3542664), (8, 2656998), (9, 2361776), (12, 1771332), (16, 1328499), (17, 1250352), (18, 1180888), (19, 1118736), (24, 885666), (34, 625176), (36, 590444), (38, 559368), (48, 442833), (51, 416784), (57, 372912), (68, 312588), (72, 295222), (76, 279684), (102, 208392), (114, 186456), (136, 156294), (144, 147611), (152, 139842), (153, 138928), (171, 124304), (204, 104196), (228, 93228), (272, 78147), (304, 69921), (306, 69464), (323, 65808), (342, 62152), (408, 52098), (456, 46614), (457, 46512), (612, 34732), (646, 32904), (684, 31076), (816, 26049), (912, 23307), (914, 23256), (969, 21936), (1224, 17366), (1292, 16452), (1368, 15538), (1371, 15504), (1828, 11628), (1938, 10968), (2448, 8683), (2584, 8226), (2736, 7769), (2742, 7752), (2907, 7312), (3656, 5814), (3876, 5484), (4113, 5168)]