21236224

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:133

約数の個数: 80

約数和(自身を含む): 46648800

約数和(自身を除く): 25412576

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 59, 64, 74, 76, 118, 128, 148, 152, 236, 256, 296, 304, 472, 512, 592, 608, 703, 944, 1121, 1184, 1216, 1406, 1888, 2183, 2242, 2368, 2432, 2812, 3776, 4366, 4484, 4736, 4864, 5624, 7552, 8732, 8968, 9472, 9728, 11248, 15104, 17464, 17936, 18944, 22496, 30208, 34928, 35872, 41477, 44992, 69856, 71744, 82954, 89984, 139712, 143488, 165908, 179968, 279424, 286976, 331816, 359936, 558848, 573952, 663632, 1117696, 1327264, 2654528, 5309056, 10618112, 21236224]

約数ペア:

[(1, 21236224), (2, 10618112), (4, 5309056), (8, 2654528), (16, 1327264), (19, 1117696), (32, 663632), (37, 573952), (38, 558848), (59, 359936), (64, 331816), (74, 286976), (76, 279424), (118, 179968), (128, 165908), (148, 143488), (152, 139712), (236, 89984), (256, 82954), (296, 71744), (304, 69856), (472, 44992), (512, 41477), (592, 35872), (608, 34928), (703, 30208), (944, 22496), (1121, 18944), (1184, 17936), (1216, 17464), (1406, 15104), (1888, 11248), (2183, 9728), (2242, 9472), (2368, 8968), (2432, 8732), (2812, 7552), (3776, 5624), (4366, 4864), (4484, 4736)]