21298240

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 112

約数和(自身を含む): 55595520

約数和(自身を除く): 34297280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 64, 76, 80, 95, 113, 124, 152, 155, 160, 190, 226, 248, 304, 310, 320, 380, 452, 496, 565, 589, 608, 620, 760, 904, 992, 1130, 1178, 1216, 1240, 1520, 1808, 1984, 2147, 2260, 2356, 2480, 2945, 3040, 3503, 3616, 4294, 4520, 4712, 4960, 5890, 6080, 7006, 7232, 8588, 9040, 9424, 9920, 10735, 11780, 14012, 17176, 17515, 18080, 18848, 21470, 23560, 28024, 34352, 35030, 36160, 37696, 42940, 47120, 56048, 66557, 68704, 70060, 85880, 94240, 112096, 133114, 137408, 140120, 171760, 188480, 224192, 266228, 280240, 332785, 343520, 532456, 560480, 665570, 687040, 1064912, 1120960, 1331140, 2129824, 2662280, 4259648, 5324560, 10649120, 21298240]

約数ペア:

[(1, 21298240), (2, 10649120), (4, 5324560), (5, 4259648), (8, 2662280), (10, 2129824), (16, 1331140), (19, 1120960), (20, 1064912), (31, 687040), (32, 665570), (38, 560480), (40, 532456), (62, 343520), (64, 332785), (76, 280240), (80, 266228), (95, 224192), (113, 188480), (124, 171760), (152, 140120), (155, 137408), (160, 133114), (190, 112096), (226, 94240), (248, 85880), (304, 70060), (310, 68704), (320, 66557), (380, 56048), (452, 47120), (496, 42940), (565, 37696), (589, 36160), (608, 35030), (620, 34352), (760, 28024), (904, 23560), (992, 21470), (1130, 18848), (1178, 18080), (1216, 17515), (1240, 17176), (1520, 14012), (1808, 11780), (1984, 10735), (2147, 9920), (2260, 9424), (2356, 9040), (2480, 8588), (2945, 7232), (3040, 7006), (3503, 6080), (3616, 5890), (4294, 4960), (4520, 4712)]